The CRAFTSMAN extreme grip 10 in adjustable wrench includes an additional locking mechanism that provides maximum gripping force in working with fasteners. This gripping force offers more than twice the gripping power on rounded fasteners compared to a standard CRAFTSMAN adjustable wrench. Equipped with adjustable wrench jaws which open up to 1 in, the user has access to a wide range of fastener sizes. Release lever allows for easy disengagement of locking mechanism