Repair kit for D-L Class 2 and 3 couplers. Includes the entire ball clamp assembly, for quick changeout. Easy to assemble- can be adjusted by hand without any tools. Fits models 980, 981, 982, 985, and 990. Meets SAE and V-5 standards. U.S. Patent No. 6,481,740 B1. For use with D-L couplers only.