... Satin, Polish Usage: Door Stainless Steel Ball Bearing Butt Door Hinge, with two ball bearings.Made of Stainless Steel Grade SUS304/316 ... . Stainless Steel Ball Bearing Butt Door Hinge Material ... : Stainless Steel SUS304 / 316 Hinge type: Two Ball Bearings Hinge with loose pin or fixed pin Corner shape: Square ...