This is the 81 Tooth 48 pitch Spur Gear from Arrma. FEATURES: Composite plastic construction Stock spur gear used in the Arrma Raider and ADX-10 Optional for the Arrma Vortex, Granite, Fury and Mojave vehicles INCLUDES: 81 Tooth 48 pitch Spur Gear jxs 11/08/11 ir/jxs