Trailer Hitch Pin BOLT Locks/ Strattec Security 7023585 Bent Pin, 5/8" Diameter, 3.55" Length, For Use With Class III/ IV/ V Hitch, With Keyed Lock, With Dust Cover, SingleTrailer Hitch Pin; Bent Pin; 5 8 Inch Diameter; 3. 55 Inch Length; For Use With Class III IV V Hitch; With Keyed Lock; With Dust Cover; Single; Opens With Vehicle Ignition Key Bolt breakthrough One Key Lock Technology the BOLT Replacement Lock Cylinder works with your vehicle ignition key. Each cylinder is automotive grade and has a stainless steel shutter to keep out dirt and moisture. Compatibility: Class III IV V Hitch Type: Bent Diameter (IN): 5 8