Pipe Superfreeze UnitMfr #: SF 2500 An easy to use pipe freezing unit that allows you to keep water systems operating while making repairs Pipe freezer has a 12 inch to 2 12 inch (12 mm to 65 mm) capacity for copper tube and a 12 inch to 1 inch (12 mm to 25 mm) capacity for steel pipe Rotary, hermetic, low back pressure compressor runs on 115V 60 Hz, 4. 5 amp, 627 W Comes with flexible rubber hoses that connect the freeze heads to the unit for easier handling and quicker