No need to drain water lines, sprinkler systems, or hot water systems before cutting pipe or tubing. The Cold-Shot keeps pressurized systems operating while you make repairs. It freezes all type of liquids in steel, copper, cast iron, aluminum and plastic pipes ranging from 1/8" to 2" (10 mm - 60 mm) using carbon dioxide (CO2). Dip-tube type cylinders are available at all welding supply houses. The Cold-Shot is faster and less expensive than "refrigerator-type" units; faster and uses less CO2 than "bag-type" units. In five minutes, you're ready to go to work on copper tubing, just three minutes for cast iron pipe. Kit includes 10 sets of freeze heads for 1/8" to 2" lines (10 mm to 60 mm), two high pressure spiral hoses with injectors, T-distributor, locking nut, hex head screwdriver, rubber gloves, goggles and carrying case. One Year Limited Warranty.