Crescent® 8" Wide Jaw Adjustable Wrench has an expanded jaw capacity that allows for use with a greater range of fastener sizes than traditional adjustable wrenches. The 8" wrench meets the requirements for an 10" wrench. It is made of alloy and has a single open end head. It has a maximum opening of 1.125" and a minimum opening of 0". It comes with a manufacturer limited lifetime warranty.