Product Details>Hinge works bidirectional pendulum>Suitable for doors with double opening function (double folding doors). Eg. Bar doors>Resilience can be adjusted by metal rod>Automatic closure: Yes>Material: stainless steel>Finish: satin>Dimensions: band height (inner height) 78mm (3"), height 93mm (3.66"), band thickness 1.5mm (0.06"), width 70mm (2.76")>for door thickness: 20-25 mm>for door width: less than 50 cm>Payload: 3.5-5 kg (for 1 hinge)Package>Packed in quantity of: 2 pieces (1 pair)>with stainless steel fixing screws (size: M4 x25 mm)Note>The material and thickness of the door affect the bearing capacity of these hinges. It is recommended to install 2 hinges for a single door. And we also recommend using 3 hinges for a heavy door and a high door.