General description Adjustable locking hose clamp plier designed for use on heater and radiator hoses, as well as water, vacuum, fuel, and air lines. Technical specifications Jaw opening: 39mm Overall length: 245mm Swivel jaws for parallel and level clamping, 68mm long Manufactured from carbon steel with pickling steel jaws and a steel handle Usage Eliminates the need to drain pressurized cooling systems when installing thermostats and water pumps.