1-1/2 Inch Rear Bar Diameter; Cadmium Plated; Chromoly Steel; With Shackle/ Bolts/ Nuts/ Washers/ Bushings/ Sleeve/ U Clamp Brackets/ Locknut/ Shackle Bushing/ End Link Mounting Bracket/ Aqua Lube Grease; Fits Ford F53 16000 and 18000 GVWR Chassis; Refer To Roadmaster Application Guide For Proper Fitment