Features 1、Make sure the door hits the door side without making a noise or bounce. 2、Effective braking and self‑closing action independent of load. 3、Oil free design makes it more reliable and durable. 4、High quality and universal construction. 5、Works with all type of roller slides and barn doors. Features: Make sure the door hits the door side without making a noise or bounce. Effective braking and self-closing action independent of load. Oil free design makes it more reliable and durable. High quality and universal construction. Works with all type of roller slides and barn doors. Specifications: Material: Plastic, Iron Maximum tension: 10-25n Service life: 50,000-8,000 times Maximum load: 20KGS-80KGS Color: Black Size: 32 x 2.3 x 2cm / 12.60 x 0.91 x 0.79 inch (appr.) Package Includes: 1 x Damper 3 x Mounting Plate 2 x Screw 1 x Screwdriver Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List