CURT 16418 5th Wheel Installation Brackets, Select Chevrolet Silverado, GMC Sierra 1500, 2500LD, 2500HD, 3500 Towing This particular kit fits certain Hub Face Length (Inches):89 This particular kit fits certain years of the Mercedes Benz ML320 This particular kit fits certain years of the Ford Windstar (see application info to verify vehicle compatibility) you expect it to be capable of towing your RV Provides a solid mounting point for 5th wheel base rails and a 5th wheel hitch Fits specific GMC Chevy pickup trucks (see application information) Designed to be used in combination with CURT base rails #16104 or #16204 Cuts installation time in half by reducing the need for drilling Protected by a rust resistant liquid Bonderite coating Made in USA (may include imported hardware) Limited lifetime warranty (one year finish