The set includes: 2 pieces door lock with 4 pieces mounting screws. Material: high quality aluminum alloy material, thickened base, rust-proof and shatterproof, safe and reliable. > Features: Easy installation , select the installation location, drill holes and tighten the screws; Built-in automatic spring, stretchy and smooth, just pull out, release and rebound automatically without hurting your hands. Wide range of uses: Widely used in various doors and windows, boxes, storage cabinets, etc., to ensure your safety improve. Product specifications: Material: aluminum alloy Automatic door lock: total size about 57 x 43.7mm Screws: 4x 4mm Colour: black Quantity: 2 pieces Product features : Installation is simple, select the installation location, drill holes and tighten the screws. Built-in automatic spring, stretches smoothly and does not hurt your hands. Thickened bottom, sturdy and durable, resistant to rust and brittleness. Good advice Different lighting and display may cause this a