Trailer King Pin Product Type Trailer King Pin For Use With Car Haulers Fifth Wheel and Gooseneck Trailer Towing Lawncare and Excavating Equipment Trailers RVs and Campers Overall Length 2 in Overall Width 1 1/2 in Finish Unfinished Features Heat-Treated to Maintain A Hardness of 302 to 363 BHN and 150 000 psi in Ultimate Strength Includes Kingpin Diameter 2 in Height 1/4 in Manufacturers Warranty Length 1 yr