Pipe Coupling: Epoxy Coated Ductile Iron, For Vibration Dirt Devil Quick Flip 12V Dirt Devil Quick Flip 12V Cordless Bagless Handheld Vacuum Includes rails for hanging files They join plain end pipe with different outside diameters that fall within the range that the coupling will accommodate and reduce the need to keep a large inventory of coupling sizes Brand SMITH BLAIR Basic Fitting Shape Coupling Bolt Hole Diameter 5 8 in Bolt Material Alloy Steel Color Blue Finish Coating Epoxy Coated Fitting Side A Gender Female Fitting Side A Nominal Pipe Size 2 1 2 in Fitting Side A Outside Diameter 7 1 2 in Fitting Side A Type Flanged Fitting Side B Gender Female Fitting Side B Nominal Pipe Size 7 1 2 in Fitting Side B Outside Diameter 7 1 2 in Fitting Side B Type Flanged For Movement Type Vibration For Pipe Schedule 250 Includes Seal Standard Low Lead Certified Standard No Maximum Operating Pressure 250 psi Overall Length 11 in Pipe Fitting Material Ductile Iron Seal Material Nitrile Specific Fitting Shape Coupling Standards ANSI A21