These Prime-Line U 10171 Steel Shelf Support Pegs make sure your shelves stay in place, with a 20 pound maximum safe load per peg. Constructed of steel, the shelving pegs come with a nickel plated finish and are strong and durable. These shelving support pegs are easy to install and used in many shelf support applications. Each shelving peg has a 5mm diameter with 5/32 inch screw mounting hole. For further dimensional information, please see the line drawing.