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Pinion Gear: Model: 0.5 Mod; Teeth: 28T; Bore Size (Shaft Dia.): 4mm / 0.16"; Outer Dia. (Teeth Part): 15mm / 0.59"; Effective Teeth Length: 5mm / 0.2"; Step Size: 12mm x 5mm / 0.47" x 0.2" (D*H)
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.