General Wire KR-D-WC Kinetic Water Ram with Carrying Case SetThe Kinetic Water Ram uses a burst of compressed air that drives a shock wave (kinetic energy) through water to break up stoppage. It"s particularly useful when the stoppage is on the far side of a drum trap or series of tight bends, since the shock wave can travel around bends without losing its force.General Wire KR-A-WC Kinetic Water Ram with Carrying Case Set Features: Compact, light weight tool for quickly opening clogged sinks, toilets and tubs Handles rust, grease, sediment, and scale in lines up through 4" in diameter Self-contained pump and pressure gauge Hit the stoppage with just the right amount of force Get instant impact with no build-up of pressure in the plumbing system The force is transmitted through water, so it"s not affected by stacks or vents Includes carrying case Set includes 6" rubber cone, 4 expansion plugs, check valve, water supply hose and universal faucet adapterGeneral Wire KR-A-WC Kinetic Water Ram with Carrying Case Set Specifications: 16 gauge plated cylinder tested for up to 600 lbs, pressure 160 lbs. gearless pressure gauge provides pinpoint pressure control Built-in air compressor easily pumps up to desired pressure Flexible cone seals drains ranging from 1 1/4" to 4"diameter Equipped with Schr der valve for use with external air compressor when clearing difficult stoppages Standard fittings include caulking hose, 4" tapered rubber cone and five tapered rubber plugs for sealing openings from 1 1/4" through 4"