WORKPRO W001309A 2-piece Quick-release Curved Jaw Groove Joint Pliers Drop forged Cr-V steel for longer life and durability Press and slide button quickly adjusts lower jaw Set includes: 8" and 10" quick release groove joint pliers All purpose jaw grips on round, flat, square and hex shapes More groove positions provide the optimum hand location for a better grip on the work piece. Profile suitable for gripping nuts with a single operation. Handles coated in synthetic resin ensures a non-slip grip. Spring articulation pin snaps pliers safely without involuntary movements. An excellent grip in the handle for a solid grip. Suitable for round, flat, square, hexagonal shapes. Chrome vanadium steel and give it an optimal balance in terms of hardness and strength through a multiple quenching process. The minimum force is required to rotate the round pieces, tighten and loosen the threaded fittings. Assure one of the best gripping position to reduce fatigue, increase work efficiency. It also reaches the most difficult to access pieces and allows a secure grip without slippage.