Multifunctional hinge,3-in-1 door closer hinge.Easy opening and closing,shock absorbing.Closing speed can be adjusted. 3-in-1 door closer hinge 1 ... difference from normal hinge installation, simplicity, flexibility, easy operation.2) no harm to the door, frame, wall and other home structure4 ... ) due to the shock absorbing, make the door and door frame not destroyed ,meanwhile prolong the working life 5 ...