Brass Parts: The brass pinion gear has strong wear resistance, high strength, high hardness and chemical corrosion resistance.
Easy to Use: Be sure your RC motor shaft have the same diameter. Comes with set screws for each pinion gear, easy to install. Hardness of teeth surface: soft teeth surface.
Tips: Release the motor to install the pinion. Make sure to lock it on the flat part of the motor shaft.
Package Content: 1pcs x Pinion Gear, 2pcs x M3 Set Screws. Good pinion gear replacement for your equipment.