1> material: made of brass, available in zinc alloy 2> shower door hinge, curved design with beveled edge. 3> wall to glass offset hinge. 4> 8mm to 12mm tempered glass. 5> two hinges used in 12mm tempered glass, the max door weight is 36kgs. 6> three hinges used in 12mm tempered glass, the max door weight is 54kgs. 7> chrome plated, brushed nickel, brass polished, polished chrome, gold plated, oil rubbed bronze. Size:90*55mm