Name: heavy duty hidden hinge aluminum door hinges Material: zinc alloy, aluminum alloy Size: 160*28*32mm Gap: 17.5mm Angle: 180 degree Door thickness: 40mm Door weight: 80 kg 2 pcs Finish: baking in nickel Fittings box: 1 piece spanner and 40 piece SS screws N. W. piece: 0.71 kg