The irwin vise grip curved jaw cr locking pliers feature a unique self energising lower jaw that delivers three times 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 f