Gear, 20-T pinion (32-p), heavy duty (machined, hardened steel)/ set screw
Note
See the attached video How To: Setting A Gear Mesh β learn how to set your gear mesh correctly to increase reliability and avoid stripping gears out prematurely due to an over-tight or loose gear mesh.
In the box
Gear, 20-T pinion (32-p), heavy duty (machined, hardened steel) with set screw