The Irwin Vise-Grip Adjustbale Wrench 150mm6 has both a metric and imperial jaw with open indicator and offers easy adjustment and the parallel jaws have a smooth surface to assist a secure grip as well as helping prevent scratches. The pull opening adjusting mechanism gives quick and easy fine adjusting and are made from chrome vanadium steel for a durable wrench. The moulded, component handle allows for a comfortable grip and is slip resistant.