CK Worldwide uses a unique head assembly that provides the largest water jacket available in an 20 series torch. With this type of construction, CK provides over 4 times the surface area for maximum heat transfer versus competitive torch heads! INCREASED COOLING CAPACITY! Over 4 times the surface area for maximum heat transfer. Cooler running torches. Longer consumable life. Will hook up to standard cables and hoses. Fail-Safe hose fittings (no wire ties required).