Draw Tite Trailer Hitch Lock 3 in. Square Receiver, 5 8 in. to 3 4 in. Pin Diameter, Professional Model 63260 Draw Tite Receiver Hitches 2 In. Class 5 The running boards also fea andfeatures vents that were The running boards also fea ture hardened plastic end caps that eliminate sharp corners and add a professional touch CURT CURT Seat Defender 58 Inch x 63 Inch Black Waterproof Universal Extra Large Bench Truck Seat Cover Protector Model 18521 The Draw Tite 5 8 in diameter dogbone lock is primarily designed for towing and features a ball bearing pick proof design Use it for securing class V towing ball mounts that have a 3 in sized receiver tube