The Loggerhead Tools 8 inch Bionic Grip is an open-ended version of the patented, award-winning Bionic Wrench. This new hand tool brings together the best features of a pair of pliers and an adjustable wrench. Like the Bionic Wrench, the Loggerhead Tools 8 inch Bionic Grip distributes force around a work surface and automatically grips multiple sizes of nuts and bolts, with no prefitting needed. However, the Bionic Grip's open-ended head can fit over work that is difficult or impossible to reach with a closed-headed wrench. The Loggerhead Tool has four serrated jaw surfaces and an interlock mechanism that stays locked while under torque load. Use this Loggerhead Bionic Wrench on household plumbing or for hydraulic and air line fittings that need to be replaced, added or taken off.