... Alloy 3, Finish: SC,SN,AB,AC,GP 4, Weight bearing:50KGS/Pair Spring Concealed Hinge1,Size:25x118x18mm2,Material: Zinc Alloy3 ... , Polished Brass, Pearl Chrome, Antique Copper, Antique Brass.4,Weight bearing: 50 KGS/PC5,Open degree:1806,Suitable for Wooden door ... be self-closing. Spring Concealed Hinge, Self closing hinge,SOSS cross hinge,invisible hinge with spring