This is a Traxxas 48P, 86T Spur Gear for models with Torque Control Slipper Clutch. FEATURES: 48 pitch 86 tooth Designed for models with a slipper clutch. Black plastic construction YOU WILL RECEIVE: One spur gearSPECIFICATIONS: Pitch: 48 Tooth: 86 COMMENTS: For this slipper clutch design there is also a 76T gear (TRAC4676), 83T gear (TRAC4683) and 90T gear (TRAC4690). ajw 9-20-06 ir/jxs &