Reese Towpower Receiver Lock is designed to be used on Class V receivers. This dog bone style receiver lock has a 5/8" pin diameter and a 3-1/2" span and fits most 2-1/2" square tube receiver hitch. This receiver lock features a push button lock mechanism, a rubber cap to keep the dirt out and 2 a-like keys. Reese is the market leader in automotive and recreational product solutions, engineered and designed to meet the demands for work and active lifestyles. Reese Towpower pioneered the technology that has set the standard for today's most advanced towing systems. We cater to the towing needs of everyone from recreation enthusiasts to heavy-duty agriculture users by manufacturing the largest selection of receiver hitches; ball mounts and hitch balls; trailer and hitch locks; couplers, jacks and winches; and electrical and lighting components that meet and exceed industry standards.