5/8", 16 mm, Chrome Plated, Class III/IV Barrel Head Hitch Pin, Made With Hardened Steel For Improved Resistance To Cutting & Shearing, Tapered Ends Offer Easy Insertion, Fits 5/8", 16 mm Receivers, Usable Length Of Receiver Pin Is 3", 76 mm, Hardened Steel For Improved Cut & Shear Resistance, Tapered Ends For Easy Insertion.