Description: 100% Brand New Boat Door Stop Holder Bumper. Made of high quality stainless steel,durable. These door bumpers provide a cushion for door and protect bulkheads from slams and dents. It's also a good choice to reduce noise from opening door. Easy to install, no installation instruction. Specification: Material: Stainless Steel Base Diameter: 55 mm / 2.17 inch Screw Holes Spacing: 35 mm / 1.38 inch Screw Hole Diameter: 5 mm / 0.2 inch Rubber Bumper Diameter: 17 mm / 0.67 inch Package Includes: 1 Piece Door Stop Holder Bumper