National Hardware N215-905 Floor Door Stop Zinc Plated (Base Steel) Angle Door Stop. US2C - Zinc Plated Burnished wrought steel. Soft, resilient gray rubber. For undercut doors up to 1-1/2". Packed with screws and plastic anchors. Prevents Damage To Walls, Floor Mount Heavy Duty Base, Fit Doors With Clearance Up To 2", Can Be Use On Wood Or Concrete Floors, Steel Base & Rubber Bumper.