The 12 in. adjustable wrench has been designed from the ground up to offer maximum productivity to the professional user. The adjustable wrench features a proprietary adjustment screw for jaws that wont back off. The ergonomic handle form has been designed for maximum comfort and wont dig into the palms, and is chrome plated for rust protection and maximum tool life. The wrenchs parallel jaw design wont slip or damage finish surfaces, and a tether-ready handle loop makes the Milwaukee 48-22-7412 perfect for the toughest of jobsites. Milwaukee stands behind their product and offers a Limited Lifetime Warranty with all adjustable wrenches.