Description
Hole diameter: apporx 8mm/0.3inches, thickness: approx 11mm/0.4inches..plastic, & sturdy, long for time service..There are 3 pieces planetary gears in the package..36 Teeth E-bike Wheel Hub Motor Planetary Gears with Bearing For Ba-fang Motor..Electric motor gear, nylon teeth planetary gear, suitable for Ba-fang motor.