With the KNIPEX Cobra XXL water pump pliers, you can simply position the upper jaw to the work piece, push the button, and close the lower jaw. The 16 in. Cobra XXL (model 87 01 560) offers the power and comfort of water pump pliers while being lighter in weight and having a greater gripping capacity than comparable pipe wrenches. It can grip a 4-1/2 in. pipe coupling and weighs as much as 2 in. pipe wrenches, which have a much lower gripping capacity. And its 22 in. size makes it the biggest pliers around. The unique self-locking adjustment and induction hardened gripping teeth means that once it's set, it stays. There's no slipping and no need to waste strength squeezing the pliers - ensuring operator safety and more efficient work. Cobra's unique jaw configuration can grip any shape object - flat, round, hex, or square. It also eliminates nut burring to avoid stripping pipes, nuts, or bolts. Additionally, the Cobra's newly redesigned adjustment provides 30% more gripping capacity than previous models. Size: extra large.