Hose Pliers Pinch Off Pinch-Off Set Fuel Line Radiator Water Brake Clamp Tool. 3 pinch off pliers 1 8-Inch, 1 10-Inch, and 1 12-Inch. Designed to easily pinch off hose lines. Radiator lines, fuel lines, coolant lines, etc. No need to drain systems before servicing. Simply squeeze the desired hose to shut jaws via the ratcheting mechanism, jaws swivel to ensure a complete shut off. The ratcheting jaws allow for automatic locking. Pinches off hose lines, radiator lines, coolant lines, and other lines. Simply squeeze the desired hose to shut jaws with the ratcheting mechanism, jaws swivel to ensure a complete shut off of the line. Adjustment jaw automatically locks. 8-inch oil road sealing pliers. Can be used to clamp tubing up to 18mm in diameter. 10 inch oil road sealing pliers. Can be used to clamp tubing up to 30mm in diameter. 12 inch oil road sealing pliers. Can be used to clamp tubing up to 41mm in diameter.