The Master Lock No. 1481DAT features a 5/8 inch (16mm) stainless steel receiver lock and adjustable coupler latch lock. The receiver lock includes the Push to Lock locking mechanism, easily used by pushing the lock body firmly onto the pin and removing the key. The Weather Tough seal and water tight cap provides additional protection from moisture and dirt. The coupler latch lock adjusts from 9/16 inch (14mm) to 2-3/4 inch (70mm) for added application flexibility..