1Application: Applicable for campervans, fifth wheelers, bumpers, horse and cargo trailers, suitable for most trailers with an opening of 3.75 x 2.75 x 1.5 in / 9.5 x 7 x 3.81cm. 2IP67 waterproof: With IP67 waterproof performance, the lock could adapt to harsh outdoor environment, ensure that your car door lock can be used for a long time. 3Anti Rust and Dustproof: Adopts special sealing gasket design to effectively prevent rust and dust of locks and accessories. 4Advanced Locking Technology: Will not be easily damaged, the mechanical structure is strong, firm, and the precision structure ensures your driving safety. 5Simple Installation: Comes with screws of different lengths to provide seamless installation, and each lock set comes with unique keys for higher security.