This is the optional ST Racing Aluminum Steering Bellcrank System for the Traxxas 1/10 scale 2WD Slash, Bandit, and Rustler and Nitro Slash. FEATURES: CNC machined aluminum construction, blue in color Three piece design with single main bellcrank for slop-free precision steering response Four ball bearings for smooth steering action INCLUDES: Steering Bellcrank System with four 5x8mm Ball Bearings jxs 09/25/12 ir/jxs