High Quality: The door closer is made of a high-quality plastic shell and stainless steel wire, offering anti-oxidation, corrosion resistance, and resistance to high and low temperatures for a long lifespan and durability. Smooth and Durable: Features high rotation speed without sticking, ensuring smooth and strong retraction. The solid steel wire is approximately 120 cm long, with adjustable length. The included hex key allows for adjusting the metal buckle size and fixing it. The small copper tube design effectively prevents wire tangling. Super Tensile Strength: The automatic door closer has a pulling force of 800g. The 1.2m high-quality steel wire has undergone multiple tensile and elasticity tests, making it resistant to pulling and not easily broken. Its strong pulling force and good elasticity allow it to close doors slowly and evenly, performing significantly better than other products on the market. Quick Installation: Installation is simple and convenient. The door closer comes with installation adhesive. Simply attach the door closer to the desired position and stick the back adhesive to the door to use. No drilling required, ensuring a firm hold without damaging the wall. Easy installation and high-temperature resistance. Two installation methods are available: with stickers and with screws. Wide Application: Suitable for all types of aluminum alloy doors, doors with strong locking force, metal doors, left and right swinging doors, wooden doors, two-way sliding doors, glass doors, screen doors, etc. Ideal for homes, offices, interior doors, kitchen and bathroom doors, and more. Description: 1. Utilizes high-quality materials, offering anti-oxidation, anti-corrosion, stability, wear resistance, weather resistance, hydraulic action, and safety closing. 2. Punch-free automatic door closer with no-punch adhesive installation, ensuring good firmness without wall damage, easy installation, and high-temperature resistance. 3. Unsuitable Materials: White walls, wallpaper, cement walls, brick walls, painted walls. Applicable Materials: Wood, metal, marble, tile, and glass. Specification: Material: Plastic, Stainless Steel Color: White Pull Force: 800g Size: 6.3 × 6.3 × 1.8 cm / 2.48 × 2.48 × 0.71 inches Package Includes: 2 x Door Closers 2 x 3M Transparent Stickers 2 x Small Wrenches 8 x Screws