[Specification]The opening angle is 45 degrees,1 pair hinges for left and right [Steel Material]Our Flip Out Tray Hinges are made of steel,anti rust and sturdy structure [Easy to Install]Remove drawer front or panels from cabinet.Attach the flip out tray hinges to the inside of the cabinet where the panel was removed.Secure the panel back onto the hinges,ensuring a proper fit that allows for a smooth flip out function [Soft Close Cabinet Hinges]each hinge has a damper that reduces the closing speed to prevent noise from closing the door [Application]Soft Close Flip Out Tray Hinges suitable for tip trays,sink flip out trays,kitchen cabinet doors,closets,bookcases,TV cabinets,wine cabinets,etc, Weight: 0.42108292042 pounds, Manufacturer: ALCXAZS