CVD -- An abbreviation for Constant Velocity Drive. "CVD" is a trademark of MIP (Moore's Ideal Products, Inc.). MIP offers their CVD universal dogbones for many R/C kits, and their CVD's are featured as standard equipment on the RS4 Pro 2, Nitro MT Racer and RS4 Pro 3. The main features of the MIP CVD's are their improved efficiency over standard universal dogbones, ability to be rebuilt if an axle or "bone" is bent or damaged and ease of finding replacement parts.