Secure your Shocker Bumper Hitch with a locking hitch pin. Available in single, 2-pack, and 3-pack locking hitch pins with matching keys for the base frame hitch and the receiver hitch on your pickup truck. Made from premium grade stainless steel. Each locking hitch pin includes a weatherproof cap to keep the water and road debris from getting into the keyhole. The ball mount attachment locking pin has a 4-5/8" L span for a 5/8" hole. The receiver hitch locking pin has a span of 3-5/8"L for a 5/8" hole and it works on receiver hitches up to 3". These locking hitch pins fit Shocker air bumper hitches including the Shocker Air, Shocker HD, Shocker HD Max Black, Shocker Streamline, Shocker Impact, Shocker Impact Max, and Shocker XR series hitches and ball mounts. Backed by a 1-year warranty. Secure your trailer and your bumper hitch with a matching hitch lock set.