[Security] High-quality automatic door locks provide additional security for doors and windows. Adding one lock at a time can improve security. [Material] Made of aluminum alloy, stable and durable, not easy to rust. The special design makes the appearance different from the traditional lock and improves security. [Appearance design] The appearance is exquisite and simple, welded and sealed, the base is thickened and reinforced, the built-in automatic spring is not easy to break and deform, and it is durable. [Easy to install] Aluminum bolts, spring-type rebound pull ring, easy to install. High-quality door bolts can improve the security of doors and windows. [Applicable scenarios] Used in family rooms, gates, garages, gardens, bathrooms, wardrobes, kitchens, offices, hotels, etc. Save space and organize your space neatly. Name: Aircraft Spring Bolt Material: zinc alloy / space aluminum Color: black Weight: 0.047 kg / 0.091 kg Uses: doors and windows / equipment / machinery, etc. Notes: with mounting screws Note: The above data is for reference only, not the actual drilling data! Subject to actual product Quantity delivered: 2 sets becomeveryrich