This is a set of optional Aluminum Rear Hubs for the Traxxas Slash 4x4. The hubs support the rear axles. FEATURES: Aluminum construction Anodized silver in color INCLUDES: Two rear aluminum hubs REQUIRES: Installation on vehicle SPECS: Width at suspension arm pins: 15mm (0.59") Height: 30mm (1.18") COMMENTS: Also available in Blue (GHHC5223) Red (GHHC5224) lmm 8.12.10 ir/jxs