... ,Multifunctional hinge,3-in-1 door closer hinge.Easy opening and closing,shock absorbing. auto closer door hinge1.Specifications Shaft DiameterΦ24mm Page ... simplicity, flexibility, easy operation.2) no harm to the door, frame, wall and other home structure4 high safety factor usage ... pressure.2) due to the shock absorbing, make the door and door frame not destroyed ,meanwhile prolong the working life 5 ...