The store is for you! If you are not satisfied with the product, please contact me first and do not leave negative feedback lightly. Thank you, have fun Tag [Security] High-quality automatic door locks provide extra security for doors and windows. Adding locks one by one 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 is durable. [Easy to install] Aluminum screws, spring pull ring, easy to install. High-quality door bolts can improve the security of doors and windows. [Applicable scenarios] Used in family rooms, doors, 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 Use: doors and windows / appliances / machinery, etc. Notes: with mounting screws Note: the above data is for reference only, not the actual drilling data! Depends on the actual product. Quantity delivered: 2 sets