The Cold-Shot Pipe Freeze Kit from General Pipe Cleaners allows you to make repairs to pressurized plumbing systems. 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 types of liquids in steel, copper, cast iron, aluminum, or plastic pipes ranging from 1/8" to 2" (10mm to 60mm) in diameter. It uses Carbon Dioxide (CO2) from a dip-tube cylinder (available at most welding supply houses) to create an ice plug in minutes that is capable of withstanding 7000 psi of pressure. It's faster and less expensive than "refrigerator-type" units; and it's 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 in cast iron pipe. This How-to video shows you how the Cold-Shot works. For more information, visit www.drainbrain.com/coldshot, or call the Drain Brains at 800-245-6200.