The IRWIN Vise-Grip Curved Jaw (CR) Locking Pliers feature a unique self-energising lower jaw that delivers 3x more gripping power than traditional locking pliers, with absolutely no slipping or stripping. The slotted geometry of the new ‘self-energising’ Vise-Grip CR locking pliers exponentially increases torque for more secure clamping. The Vise-Grip CR Plies can establish multiple contact points, guaranteeing a significantly tighter grip. As a result, the CR range is especially well-suited for performing in greasy work environments and for manoeuvring in tight spaces where a worker cannot easily get two hands on a tool. The patented curved jaw securely grips multiple surface shapes including round pipes, square or hex bolts and more.