Master Lock Trailer Coupler Lock Set Royal Days INCLUDE and removable features like a

and removable features like a breath box

With its adventure-inspired graphic and iconic look

The insulated liner can be removed during the warmer seasons

Records positive or negative psi peaks

Master Lock Trailer Coupler Lock Set Royal Days INCLUDE and removable features like aThe Master Lock No. 3794DAT features a trailer coupler lock, receiver lock and trailer coupler latch lock. The trailer coupler lock fits 1 7 8in (48mm), 2in (51mm) and most 2 5 16in (59mm) couplers. 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 Toughseal and water tight cap provides additional protection from moisture and dirt. The coupler latch