Tool connection 5540 Tyre Valve Tool Set 3pc ( Laser ) Enables the user to remove/install tyre valves without removing the tyre The hook is used to remove the old valve body, the screw tool and tapered tube are used for fitting. lubricate with tyre lube or similar. Ideal for replacing leaking valves on cars | vans | motorcycles etc Not suitable for tyres with TPMS