Made from zincs Alloy, anticorrosion and rustproof, quiet and smooth. Not easily deforme When closed, the speed of the lid's closure can be adjusted using a wrench, enabling a slow close hinge buffer function to prevent the lid from shutting quickly and injuring fingers Suitable for cabinet, wardrobe, toy box, wooden box hinges,toy box hinges soft close, bookshelves, filing cabinets, storage cabinets Supports a 180° opening. Simply adjust the tension by rotating the screw in the middle of the support arm with a wrench, turning the screw clockwise to increase tension, or counterclockwise to reduce tension Easy to Install: Simply mark the installation position before proceeding, then secure the support hinge in place to meet your desired angles, Manufacturer: Hangsu