ProSource Floor Flange, Nominal Size: 1/2 in, FIP Connection, Flange Diameter: 3 in, Bolt Hole Diameter: 0.28 inch (7 mm), Number of Bolt Holes: 4, Length Through Bore: 0.55 in, Face Type: With Bolt Holes, Maximum Pressure: 300 psi, Operating Temperature: -4~572?(-20~300?)