Locking chain wrench clamp holds and locks around any shape up to 140mm diameter, ideal for old style oil filters. Quick adjust ratcheting mechanism for speed of use with a knurled vice nut to lock everything in place. The heavy duty chain offers excellent grip, even on oily surfaces whilst the snap, lock grip handle easily tightens the chain and holds it securely, ideal for removing stubborn filters. A versatile tool suitable for a wide range of other uses including, plumbing, holding components for welding and fabricating as well as removing seized components.