The hinge is small and has a supporting force of 90 degrees, which can occupy a large space. Easy to install - anyone can use a screwdriver to complete the installation, simple without drilling Features: Made of strong steel, can withstand heavy loads, very suitable for interior wood doors / doors Ball bearing hinges are popular because they operate smoothly, are durable, and can withstand higher loads than standard hinges. Usually used for interior doors. Usually used for thick wood or glass doors To ensure that the fire door remains closed in the event of a fire, it is suitable for smoke exhaust door components Product name: hidden sliding hinge 90 degree limit hinge Performance: Maximum radial static diameter: 625N Average democratic limit coefficient: 420N Maximum initial static diameter: 205N Maximum mean limit coefficient: 204N Maximum retention factor: 18.2N Suitable for built-in cabinet doors with buffer switch Packing: 2 pieces