The use of a spring door hinge can automatically close the door, when the door opens more than 90 degrees, the positioning beads inside the hinge will automatically position on the card slot, keep your door fixed in the open Make of Cold rolled steels, Enduring to use indoors and outdoors, suitable for various types of door or cabinets Multifunctional designs combines door return, door Closing, and door suction, suitable for various applications Removable cores and reinforced shafts allow for easy disassembly and long terms durability It can be installed behind door, cabinets, shoe cabinets, louvers, ventilation openings, and any other place that require automatic closures, making life