IRWIN Vise-Grip adjustable wrenches have both a metric and imperial jaw width indicator and offers easy adjustment and the parallel jaws have a smooth surface to assist a secure grip and help prevent scratches. The pull opening adjusting mechanism gives quick and easy fine adjustment and is made from chrome vanadium steel for a durable wrench. Moulded 1 Component Handle - Comfortable, Pull-resistant Handle. Ref: UTTK845