32P 3.175mm shaft 10T 11T 12T 13T 14T pinion gear and a hex key
3.175mm Shaft Size Motors(Compatible With 550 540 3650 etc motor) make sure your RC motor shaft have the same diameter
Made of Hardened Steel to increased wear resistance and improve fatigue life,make them roll smoothly, it will work with the steel spur gear. did not work with plastic or aluminum spur gear
Height:11mm/0.43inch Comes with screws for each pinion gear