These are Yellow 1/8 scale Velocity V2 Buggy Wheels from Proline. FEATURES: Smooth, flat yellow face for better aerodynamics Fits 17mm, 1/8 scale front and rear hubs INCLUDES: Four Wheels One Small Proline Decal REQUIRES: 1/8 scale tires and optional foam inserts Tire Glue DTXR2000, DTXR2002 SPECS: Tire Bead Diameter: 87.75mm (3.45") Width: 42mm (1.65") Axle Hole Diameter: 12mm (0.47") Hex Size: 17mm (0.67") cnh 7/2/08 ir/jxs