What is a G Pen and who makes it?

G Pen is the consumer vaporizer brand owned by Grenco Science, a Los Angeles-based manufacturer founded in 2012. G Pen was one of the first companies to popularize the slim portable vape pen form factor and has since expanded into a full lineup including dry herb vaporizers (Elite 2, Dash, Dash+), concentrate vaporizers (Micro+, Connect, Hyer), and portable e-rigs (Roam). G Pen is also known for its high-profile artist and brand collaborations — Snoop Dogg (original G Pen founder partnership), Cookies, Lemonnade, Dr. Greenthumb's (B-Real of Cypress Hill), and Tyson 2.0 all have signature G Pen editions. Grenco Science products are sold globally through authorized retailers like Discreet Smoker with full manufacturer warranty support.

What is the difference between the G Pen Roam, Dash, Connect, Micro+, Hyer, and Elite?

G Pen makes six main device categories. The G Pen Roam is a portable e-rig for concentrates with built-in water filtration via a glass attachment — the brand's flagship for dabbing on the go. The G Pen Connect is a concentrate vaporizer designed to attach to any 14mm or 18mm female water pipe via a glass adapter — turns your existing bong into an electronic dab rig. The G Pen Micro+ is a compact 510-threaded concentrate vaporizer for users who want the smallest possible form factor. The G Pen Hyer is a larger desktop-style electric dab rig with both concentrate and dry herb tank options. The G Pen Dash and Dash+ are entry-level dry herb vape pens with simple temperature control. The G Pen Elite 2.0 is the premium dry herb vaporizer with a larger oven, faster heat-up, and better vapor quality than the Dash line. Each device runs different tanks and mouthpieces, so accessories generally don't transfer between models.

How do I use a G Pen vaporizer?

All G Pen vaporizers follow the same basic operation pattern: charge fully via USB before first use, press the power button five times to turn on, select your desired temperature (most G Pens have 3 to 4 preset heat settings), then load the appropriate material. For dry herb devices (Dash, Dash+, Elite 2), grind herb to a medium-fine consistency and pack the chamber loosely. For concentrate devices (Connect, Micro+, Roam), apply a small amount of wax or rosin directly to the heated atomizer using a dab tool. For the Connect specifically, attach the glass adapter to your bong or rig before lighting. Once heated (a vibration or LED change confirms ready state), place the mouthpiece to your lips and draw slowly for 5 to 8 seconds. Each chamber-load typically produces 2 to 5 draws before needing a refresh or fresh atomizer.

What is the G Pen Connect and how does it attach to a bong?

The G Pen Connect is a unique concentrate vaporizer designed to turn any standard glass water pipe into an electronic dab rig. Rather than a built-in mouthpiece, the Connect features a quartz heating tank that you load with concentrate, plus a Glass Adapter (sold separately) that fits 14mm or 18mm female water pipe joints. The metal connector between the tank and adapter creates an airtight seal. To use: attach the Glass Adapter to your bong's joint, click the Connect onto the adapter, load concentrate into the heated tank, and draw through the bong as you would with a regular bowl. The result is water-filtered concentrate vapor without needing a torch, butane, or a dedicated e-rig. The Connect runs on a 850mAh battery and heats in under 5 seconds. Replacement Connect Tanks are consumable parts — expect to replace every 30 to 60 days with regular use.

What G Pen collaboration editions are available?

G Pen has long-running partnerships with several cannabis culture brands and artists, releasing special collaboration editions across the Roam, Connect, Micro+, and Hyer lines. Current and recent collabs include Cookies (Cookies x G Pen Roam, Connect, Micro+ with the brand's iconic colorway), Lemonnade (Lemonnade x G Pen Roam and Connect in yellow), Dr. Greenthumb's (B-Real of Cypress Hill's Roam, Connect Tank, Stundenglass Infusion Chamber), and Tyson 2.0 (Mike Tyson x G Pen Hyer). Collab editions feature the partner brand's signature colors, logos, and packaging but use identical internals to the standard models — they perform the same as the base device, with no functional improvements over the standard versions. The price premium is essentially for the design and branding. Each collab includes the standard manufacturer warranty.

How do I clean my G Pen vaporizer?

Cleaning routine varies slightly by G Pen model. For concentrate devices (Connect, Micro+, Roam, Hyer), remove the tank/atomizer while still warm and wipe with a cotton swab dipped in 91% or higher isopropyl alcohol — residual heat dissolves concentrate residue instantly. For deeper cleaning every 5 to 10 sessions, soak the tank in alcohol for 30 minutes, then rinse with warm water and dry completely. For dry herb devices (Dash, Dash+, Elite 2), empty the chamber, remove the mouthpiece and screen, and soak the metal parts in alcohol for 15 to 30 minutes. Use a pipe cleaner to clean the vapor path. The Dash+ filter screens are easy-replace 5-packs for users who prefer swapping over scrubbing. Never submerge the main device body in liquid — wipe the exterior with a damp cloth only. Replace tanks, atomizers, and mouthpieces when residue becomes impossible to remove.

Which G Pen replacement parts wear out fastest?

Three categories of G Pen parts need periodic replacement for the device to keep performing like new. Atomizers and tanks (Connect Tank, Hyer Quartz Tank, Micro+ Tank) wear out first — expect 30 to 60 days of regular use before vapor production noticeably declines. Mouthpieces (Roam, Dash, Elite, Dash+) crack, discolor, or get sticky from concentrate exposure over time — keep spares on hand for daily users. Filter screens (Dash and Dash+ 5-packs) clog with herb residue and should be replaced every 30 days. Less-frequent replacements include glass adapters (Hyer 10mm/14mm/18mm Male Glass Adapters break if dropped), cap and sleeve sets, and the Hyer Power Cable. The G Pen Elite II Silicone Sleeve protects the device exterior and lasts indefinitely unless physically damaged. Stocking up on filter screens and mouthpieces is the best investment for long-term G Pen ownership.

G Pen

G Pen by Grenco Science is one of the most recognized portable vaporizer brands in cannabis culture — makers of the Roam portable e-rig, the bong-attaching Connect, the Hyer desktop...

G Pen by Grenco Science is one of the most recognized portable vaporizer brands in cannabis culture — makers of the Roam portable e-rig, the bong-attaching Connect, the Hyer desktop dab rig, the compact Micro+, the Dash dry herb pen line, and the Elite 2 premium herb vape. Discreet Smoker stocks the full active G Pen catalog including the standard models plus the long-running Cookies, Lemonnade, Dr. Greenthumb's, and Tyson 2.0 collaboration editions, along with the complete replacement parts and accessory lineup. Free shipping on orders over $69, discreet packaging on every order.

About G Pen and Grenco Science

Founded in 2012 in Los Angeles, Grenco Science launched the original G Pen as one of the first slim portable vape pens — a partnership with Snoop Dogg that became a cultural touchstone for cannabis consumer hardware. The brand has since expanded into a complete vaporizer lineup spanning dry herb, concentrate, and dual-use devices, with high-profile artist and brand collaborations that turn each device release into a cultural moment.

G Pen Portable E-Rigs

G Pen Roam

The flagship portable e-rig for concentrates. Built-in water filtration via a glass attachment, USB-C charging, and 4 temperature presets in a pocket-sized form. Available in standard colorways plus Cookies, Lemonnade, and Dr. Greenthumb's collab editions.

G Pen Hyer

The larger electric dab rig with both concentrate and dry herb tank options. 6000mAh battery for extended desktop sessions. Pairs with Hyer Glass Adapters (10mm, 14mm, 18mm Male) to integrate with existing rigs and water pipes.

G Pen Concentrate Vaporizers

G Pen Connect

The unique water-pipe-attaching concentrate vaporizer. Click the Connect onto any standard 14mm or 18mm female water pipe joint via the Glass Adapter, load concentrate into the quartz heating tank, and draw through your bong as you would with a regular bowl. Water-filtered dabbing without torches or butane.

G Pen Micro+

The compact 510-threaded concentrate vape for users who want the smallest possible form factor. Available with replaceable tanks and mouthpiece assemblies for long-term use. The Micro+ Tank is the wear-and-replace consumable.

G Pen Dry Herb Vaporizers

G Pen Elite 2.0

The premium dry herb vaporizer in the G Pen lineup. Larger oven, faster heat-up, and better vapor quality than the Dash line. Compatible with the Elite Water Peace Adapter for water-filtered draws and the Elite II Silicone Sleeve for protection.

G Pen Dash and Dash+

Entry-level dry herb vape pens with simple temperature control. The Dash+ is the updated version with improved airflow and mouthpiece design. Filter Screens 5-packs are inexpensive consumables that keep the airpath clean.

G Pen Collaboration Editions

G Pen's signature collabs feature unique colorways and branding while maintaining the same internals as standard models.

Cookies x G Pen

Cookies-branded editions of the Roam, Connect, Micro+, and Roam 510 Battery in the brand's signature blue colorway. The Cookies x G Pen Roam Mouthpiece is available as a standalone replacement.

Lemonnade x G Pen

Yellow-themed Lemonnade collab editions of the Connect and Roam.

Dr. Greenthumb's x G Pen

B-Real of Cypress Hill's branded line including the Dr. Greenthumb's Roam, Roam Battery, Roam Mouthpiece, Connect Tank, plus the Dr. Greenthumb's x Stündenglass Infusion Chamber Assembly, Hose Assembly, and Hose Wand for the gravity-bong platform.

Tyson 2.0 x G Pen Hyer

Mike Tyson's signature Hyer edition.

G Pen Replacement Parts & Accessories

Atomizers, tanks, mouthpieces, glass adapters, and replacement parts for every device in the G Pen lineup.

Tanks and Atomizers

Connect Tank and Replacement Tank, Hyer Quartz Tank and Cap, Hyer Dry Herb Tank Assembly, Micro+ Tank, Carta Classic Everlast Atomizer. Tanks and atomizers are consumable parts — expect 30 to 60 days of regular use.

Mouthpieces

Roam Mouthpiece, Elite Mouthpiece, Elite II Mouthpiece Assembly and Insert, Dash Mouthpiece and Filter Screens, Dash+ Mouthpiece Insert and Filter Screens, Micro+ Mouthpiece Assembly. Available in standard colorways and brand collab variants.

Glass Adapters

Hyer 10mm, 14mm, and 18mm Male Glass Adapters for integrating with existing water pipes. Connect Glass Adapter 14mm Male and Metal Connector for bong-mounting the Connect.

Power & Charging

Hyer Power Cable, Cookies x G Pen Roam 510 Battery, Dr. Greenthumb's x G Pen Roam Battery (replaceable 800mAh pack).

Tools and Sleeves

Elite II Pick Tool for chamber prep, Elite II Silicone Sleeve for device protection.

Why Buy G Pen from Discreet Smoker

Every G Pen product at Discreet Smoker is sourced through authorized Grenco Science channels and ships with the full manufacturer warranty. Counterfeit G Pen devices are common on unauthorized marketplaces and don't qualify for warranty service. Orders ship in unbranded packaging with no smoke shop or vape branding visible, and free shipping kicks in at $69.

Frequently Asked Questions

What is a G Pen and who makes it?

G Pen is the consumer vaporizer brand owned by Grenco Science, a Los Angeles-based manufacturer founded in 2012. G Pen was one of the first companies to popularize the slim portable vape pen form factor and has since expanded into a full lineup including dry herb vaporizers (Elite 2, Dash, Dash+), concentrate vaporizers (Micro+, Connect, Hyer), and portable e-rigs (Roam). G Pen is also known for its high-profile artist and brand collaborations — Snoop Dogg (original G Pen founder partnership), Cookies, Lemonnade, Dr. Greenthumb's (B-Real of Cypress Hill), and Tyson 2.0 all have signature G Pen editions. Grenco Science products are sold globally through authorized retailers like Discreet Smoker with full manufacturer warranty support.
What is the difference between the G Pen Roam, Dash, Connect, Micro+, Hyer, and Elite?

G Pen makes six main device categories. The G Pen Roam is a portable e-rig for concentrates with built-in water filtration via a glass attachment — the brand's flagship for dabbing on the go. The G Pen Connect is a concentrate vaporizer designed to attach to any 14mm or 18mm female water pipe via a glass adapter — turns your existing bong into an electronic dab rig. The G Pen Micro+ is a compact 510-threaded concentrate vaporizer for users who want the smallest possible form factor. The G Pen Hyer is a larger desktop-style electric dab rig with both concentrate and dry herb tank options. The G Pen Dash and Dash+ are entry-level dry herb vape pens with simple temperature control. The G Pen Elite 2.0 is the premium dry herb vaporizer with a larger oven, faster heat-up, and better vapor quality than the Dash line. Each device runs different tanks and mouthpieces, so accessories generally don't transfer between models.
How do I use a G Pen vaporizer?

All G Pen vaporizers follow the same basic operation pattern: charge fully via USB before first use, press the power button five times to turn on, select your desired temperature (most G Pens have 3 to 4 preset heat settings), then load the appropriate material. For dry herb devices (Dash, Dash+, Elite 2), grind herb to a medium-fine consistency and pack the chamber loosely. For concentrate devices (Connect, Micro+, Roam), apply a small amount of wax or rosin directly to the heated atomizer using a dab tool. For the Connect specifically, attach the glass adapter to your bong or rig before lighting. Once heated (a vibration or LED change confirms ready state), place the mouthpiece to your lips and draw slowly for 5 to 8 seconds. Each chamber-load typically produces 2 to 5 draws before needing a refresh or fresh atomizer.
What is the G Pen Connect and how does it attach to a bong?

The G Pen Connect is a unique concentrate vaporizer designed to turn any standard glass water pipe into an electronic dab rig. Rather than a built-in mouthpiece, the Connect features a quartz heating tank that you load with concentrate, plus a Glass Adapter (sold separately) that fits 14mm or 18mm female water pipe joints. The metal connector between the tank and adapter creates an airtight seal. To use: attach the Glass Adapter to your bong's joint, click the Connect onto the adapter, load concentrate into the heated tank, and draw through the bong as you would with a regular bowl. The result is water-filtered concentrate vapor without needing a torch, butane, or a dedicated e-rig. The Connect runs on a 850mAh battery and heats in under 5 seconds. Replacement Connect Tanks are consumable parts — expect to replace every 30 to 60 days with regular use.
What G Pen collaboration editions are available?

G Pen has long-running partnerships with several cannabis culture brands and artists, releasing special collaboration editions across the Roam, Connect, Micro+, and Hyer lines. Current and recent collabs include Cookies (Cookies x G Pen Roam, Connect, Micro+ with the brand's iconic colorway), Lemonnade (Lemonnade x G Pen Roam and Connect in yellow), Dr. Greenthumb's (B-Real of Cypress Hill's Roam, Connect Tank, Stundenglass Infusion Chamber), and Tyson 2.0 (Mike Tyson x G Pen Hyer). Collab editions feature the partner brand's signature colors, logos, and packaging but use identical internals to the standard models — they perform the same as the base device, with no functional improvements over the standard versions. The price premium is essentially for the design and branding. Each collab includes the standard manufacturer warranty.
How do I clean my G Pen vaporizer?

Cleaning routine varies slightly by G Pen model. For concentrate devices (Connect, Micro+, Roam, Hyer), remove the tank/atomizer while still warm and wipe with a cotton swab dipped in 91% or higher isopropyl alcohol — residual heat dissolves concentrate residue instantly. For deeper cleaning every 5 to 10 sessions, soak the tank in alcohol for 30 minutes, then rinse with warm water and dry completely. For dry herb devices (Dash, Dash+, Elite 2), empty the chamber, remove the mouthpiece and screen, and soak the metal parts in alcohol for 15 to 30 minutes. Use a pipe cleaner to clean the vapor path. The Dash+ filter screens are easy-replace 5-packs for users who prefer swapping over scrubbing. Never submerge the main device body in liquid — wipe the exterior with a damp cloth only. Replace tanks, atomizers, and mouthpieces when residue becomes impossible to remove.
Which G Pen replacement parts wear out fastest?

Three categories of G Pen parts need periodic replacement for the device to keep performing like new. Atomizers and tanks (Connect Tank, Hyer Quartz Tank, Micro+ Tank) wear out first — expect 30 to 60 days of regular use before vapor production noticeably declines. Mouthpieces (Roam, Dash, Elite, Dash+) crack, discolor, or get sticky from concentrate exposure over time — keep spares on hand for daily users. Filter screens (Dash and Dash+ 5-packs) clog with herb residue and should be replaced every 30 days. Less-frequent replacements include glass adapters (Hyer 10mm/14mm/18mm Male Glass Adapters break if dropped), cap and sleeve sets, and the Hyer Power Cable. The G Pen Elite II Silicone Sleeve protects the device exterior and lasts indefinitely unless physically damaged. Stocking up on filter screens and mouthpieces is the best investment for long-term G Pen ownership.