Price For: Each For Use In: Low Pressure seal in Circular Openings Item: Mechanical Expansion Plug Type: Turn-Tite Material: Brass, Zinc Plated Steel, Neoprene Rubber Min. Dia.: 3.13 Max. Diameter: 3.506 Max. Back Pressure: 5 ft. of Head Nominal Size: 3-1/4" Country of Origin (subject to change): United States ' Mechanical Expansion Plug, T-Handle, Nominal Size 3-1/4 In., Min. Dia. 3.13, Max. Diameter 3.506, Max. Back Pressure 5, Max. Back Pressure 5, Material of Construction Brass, Zinc Plated Steel, Neoprene Rubber, For Use In Low Pressure seal in Circular Openings '