GearWrench 2 1/2” O.D Capacity Large Hose Pinch-Off Pliers The GearWrench 2 1/2” O.D Capacity Large Hose Pinch-Off Pliers are ideal for use on radiator hoses, heater hoses, water, air, vacuum, and fuel lines, has a 2 1/2” capacity outside diameter, extra long cushioned hand grips for comfort and control, the clamping mechanism locks automatically (no screws or levers to set or adjust), and are black oxide coated to resist rust and corrosion.