This is the 54 tooth spur gear for the Traxxas 4x4 Slash or nitro jato Stadium truck. Features: conk 6061-t6 aluminum construction direct fit replacement hard anodized in light gunmetal color. Pitch: 0.8 module you will receive: one 54 tooth 0.8 module Pitch spur gear. Requirements: assembly onto vehicle comments: hard anodizing or hard coat is an electrochemically produced grey layer of hard aluminum oxide on the surface of aluminum components.