20 tooth 32 pitch pinion, 1/8th" bore.32 pitch alloy pinions are not heat treated and should only be used with plastic spur gears. If you only run plastic spur gears these pinions are the perfect choice. In sizes 9 through 22 teeth. 1/8 inch bore. One 5-40 set screw included. 1/16 inch allen wre..
70 Tooth, 48 Pitch Stealth Pro Spur.Machined spur gear with multiple mounting/diff ball holes. Used on may pan cars, touring cars and many others.70 Tooth does nothave the larger lightening holes shown in picture.
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