Kobalt 3-piece Groove Joint Pliers Set #464646 Include 8", 10" and 12" groove joint pliers with Ergonomic bi-material anti-slip grips Drop forged Chrome Nickel Steel (CrNi) for strength and durability Hardened precision machined jaws last longer and grip better 1 piece rivet design eliminates re-tightening Tongue and Groove design for positive non-slip grip