[Material] This automatic door closer is made of premium zinc alloy material, which is durable and not easy to fade. It features fine workmanship and is rust-proof. [Adjustable Tension] This product allows adjustment of both tension and closing speed, converting a hinged door into a self-closing door. It is suitable for both left-handed and right-handed doors. [Easy Installation] This automatic door closer comes with all necessary accessories for easy installation. It can be used on doors weighing up to 30 kg, with adjustable tension. Color: Black Material: Zinc Alloy Package Contents: 1 x Automatic Door Closer Kit Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.