This set of Crescent adjustable wrenches feature a wider jaw opening than a traditional adjustable wrench, which allows you to use them with a greater range of fastener sizes. With their larger opening, each wrench can do the work of a adjustable wrench 1 size larger. Due to their serrations on the upper jaw, these wrenches provide up to 4X more torque than a traditional adjustable wrench. The second generation adjustable wrenches boast a wider knurl for easier adjustment and a laser etched scale on the head providing a quick and convenient way to determine fastener size. Manufactured from alloy steel with a black oxide finish to resist corrosion allows the wrenches to be used in professional and industrial settings, as well as at home. The wide jaw capacity allows each tool to work with more fastener sizes. The wider handle has a non-slip cushion grip that provides better comfort and less stress on the users hand.