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Grex Cordless 2" 21 Gauge Brad Nailer - GCH850

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Grex GCH850 2" 21 Gauge (21Ga) Cordless Brad Finish Nailer- (660292101085) 


The Grex GCH850 is again, a first of its kind. The first and only cordless 21 gauge brad nailer. It touts the same size, weight and ergonomics as our cordless 23 gauge headless pinner, but with the ability to drive 21 gauge brad nails up to 2" in length; making it the most versatile cordless finish nailer in the industry. Grex Cordless technology continues to make it possible to create cordless nailers in a form factor that you need with no compromise on power. The 21 gauge brad nail is a perfect compromise providing holding power closer to that of an 18 gauge brad nail, but leaving a hole size closer to that of a 23 gauge pin. This translates into both time and cost savings by being able to go onto a jobsite with only one nailer instead of 2 different tools. Plus this is all achieved with the same award winning robust build quality that users have trusted for more than 25 years.

MSRP $499.00 NEW SALE PRICE $438.00



9.25"L x 10.25"H x 2.75"W (23.5 x 26.1 x 7 cm)


4.0 lbs. (1.8 kgs.) includes batteries

Fuel Cartridge


Fuel Capacity

Approx. 1,300 shots per cartridge

Battery Type

2x AAA alkaline batteries (1.5V), IEC LR03

Battery Capacity

Approx. 50,000 shots per set of batteries

Max Cycle Rate

Approx. 60 shots per minute

Operating Temp.

10°F (-12°C) to 100°F (38°C)

Operating Altitude

Up to 6,500 feet (2000 meters)

Fastener Type

21 Gauge Brad Nails

Fastener Range

3/8" ~ 2" (10mm ~ 50mm)

Fastener Capacity

1 strip (approx. 150 brads)

Best balanced. Lightweight and most compact cordless nailer

- Powerful motor. Sinks 2” brads into solid oak or maple

- Gas powered. For instant reliable consistent operation

- Trigger instant shot. No ramp up time, feels like pneumatic nailer

- Use it everywhere. Operates at high altitudes and in cold weather

- Uses 2 AAA batteries. Low cost. Easily accessible. No charging. No downtime

- Simple fuel cartridges. No expiration dates. Minimal odor. Low cost

- Robust build with non-metal heat shields

- Passive heat management keeps tool compact and running efficiently

- Easy Maintenance. No regular maintenance schedule. Field serviceable

- Power Adjustment Knob accommodates different woods and nail lengths

- Multi-angle shooting. Drive nails at any angle

- Fine narrow nose. For precise and accurate nail placement

- Minimal hole size in workpiece for less puttying and a better finish

- Auto lock-out feature reduces tool wear and prevents empty shots

- Posit-Lock Nose cover with extra fine tolerances minimizes jams

- Belt hook. Right or left mounted for your convenience

- Removable no-mar rubber tip protects workpiece locates position

- Fastener indicator window shows when fasteners are low

- Rubber handgrip for a firm comfortable tool grip

- Stepped magazine allows tool to access corners

- Extra no-mar tip for when you lose the first one

- Allen key storage for quick convenient access

- On-Board adjustable Edge Guide to work faster and more precisely

- Fuel cartridges sold separately.

* Results will vary depending on temperature, altitude, and rate of operation.

^ Results will vary depending on battery brand, temperature, and rate of operation.

† Exceeding the maximum cycle rate could result in tool overheating and loss of performance.

‡ Refer to section titled “Fastener Compatibility” for details.

Suggested Applications: 

Trim and moldings, Cabinet assembly, Furniture and cabinet finish work, Jig fixtures, Light wood assembly, Planar boxes, Panelling, Window beading, Scribe molding, Door and window casings, Picture frame assembly, Decorations.
Kit Contents: 
- Grex Cordless 2" 21 gauge brad nailer
- Extra no-mar tips
- Safety goggles
- Carrying case  ( fuel, battery, and fastener storage compartments)
- 2x AAA Alkaline batteries
- Hex Wrenches 
- Owners Manual