Pinion Gear 1/8" Bore 32P 21T (RRP0210)

32-pitch alloy pinion gear with a 1/8-inch bore and 21 teeth, designed for use with plastic spur gears. Not heat-treated, it is intended for plastic-gear setups where smooth, reliable engagement matters.

Includes a single 5-40 set screw for secure installation; a 1/16-inch Allen wrench to tighten it is not included.