Steel pinion gear for motors. Hole is half rounded. Please make sure it fit on your motor. Gear is fixed by included nut screw.
SHS Airsoft is one of the leading airsoft suppliers from Hong Kong, selling a large variety of AEG upgrade parts. It‘s very well known for their well-priced upgrade parts, such as their motors, gearboxes, gear sets, cylinders, barrels and hop-ups.
SHS also includes the Super Shooter brand (premium SHS parts) and PPS (accessories and parts for gas and sniper rifles).