Uxcell a15120400ux0092 54mm Length Invisible Bed Hinge Furniture Hardware Parts 10 Sets Package Content: 10 sets x invisible Bed hinge; weight: 365G Product Name: invisible Bed hinge; material: metal Main Color: Bronze tone; total size: 54x34x3mm/2.1"x1.3"X0.12"(L*w*t two parts together) Plane part mounting size: 31x14mm/1.2"X0.55"(L*w); plane part center hole size: 22 x 12mm/0.87"X 0.5"(L*d) Mounting hole Dia: 5mm/0.2"; bulge part Dia: 10mm/0.4"