These 4.5-inch pump pliers are a solid, no-nonsense tool for gripping, turning, and holding. The right-angle head and laser heat-treated teeth give you a really secure bite on nuts, bolts, or pipes, and they're built to last. They've got an undercut tongue and groove design that locks in place without slipping, and the PermaLock fastener replaces a traditional nut and bolt, so it won't fail on you. The jaw opens up to a .50 inch (12.5mm) capacity. There's also a reinforcing edge along the tool to minimize stress and prevent breakage. They feel good in the hand and are just the right size for tighter spots where you need some leverage. A reliable addition to any DIYer's or mechanic's toolbox for plumbing, automotive, or general repair work.