The Master Lock® No.1669DAT features a 5/8 in stainless steel Barbell™ extended length receiver lock and stainless steel 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 watertight cap provides additional protection from moisture and dirt. The coupler latch lock adjusts from 9/16 to 2-3/4 in for added application flexibility. The limited lifetime warranty provides peace of mind from a brand you can trust. Master Lock® Receiver and Coupler Lock, Extended Length, Stainless Steel