3 pc. Hose Pinching Pliers Set Heat-, non-conductive reinforced nylon won’t rust or corrode . Smooth, rounded jaw prevents damage when used to pinch off flexible lines including coolant, fuel, vacuum, transmission, heater, brake, and other fluid lines . Quick and simple one hand use with built-in locking mechanism . Small hose clamp for up to 3/8 in. (10 mm) diameter line . Medium hose clamp for up to 5/8 in. (15 mm) diameter line . Large hose clamp for up to 1 in. (24 mm) diameter line . Not intended for use on rigid, reinforced, or high pressure lines . Item UPC: 802090517525 51752