Excellent material: made of high quality zinc alloy, corrosion resistant. Bold lock hook, thick pull ring, durable. Size: 50MM opening size, suitable for door thickness 1-6MM. Fashionable appearance: The surface is polished and chrome-plated and can be used in modern boats, RVs, cabinets and other places. Easy to use: All accessories are complete, can be replaced directly, easy to install, and can be unlocked inside and outside during use. Wide range of applications: It can be used as RV modification accessories, cabinet door locks, slide locks, toolbox door locks, including locks for the ship, ship, and yacht industries.