Master Lock 2848DAT Key Alike Set with Receiver and Coupler Latch Locks, 2-Piece Set LOCK APPLICATION: Best used for vehicles, trailers, and RV hitch locks EASE OF USE: Receiver lock features convenient Push to Lock locking mechanism: push lock body firmly onto the pin and remove key DURABLE DESIGN: Weather Tough seal and watertight cap provide protection from moisture and dirt SPECIFICATIONS: Usable length of receiver pin is 2-3/4 in.; Stainless steel lock fits 1/2 in. and 5/8 in. receiver openings INCLUDES: One receiver lock, one stainless steel coupler latch lock, two keys; both keys open both locks