This is the Golden Horizons Aluminum Gear Box Collar for the Traxxas E-Maxx (TRAC92**). FEATURES: Silver aluminum construction INCLUDES: One Golden Horizons Aluminum Gear Box Collar SPECS: Width: 1.4" (36mm) Diameter: .86" (22mm) COMMENTS: Also available in blue (GHHC2581) Golden HorizonsPart GHH02582