This is a 20 tooth 48 pitch pinion gear. This is the gear that attaches directly to the motor shaft. FEATURES: Steel construction YOU WILL RECEIVE: One 20T 48P pinion gear One 4-40 set screw REQUIREMENTS: Installation onto 1/8" standard motor shaft. COMMENTS: This pinion can be used on many vehicles or other applications requiring a 48 pitch pinion gear. See subs for pinion gears with a different number of teeth. cmc 01/10/02 &