Milwaukee?(R) TORQUE LOCK?,,? Locking Tools provide faster tool setup and more locking force for the professional tradesmen. The patent pending thumb screw provides the user with a more convenient geometry for hand force, while providing clearance to generate more torque with the unique screwdriver through-hole design. Featuring hardened jaws for more gripping power, and forged alloy steel for maximum durability Milwaukee locking tools are made for the toughest jobsite. Milwaukee stands behind their product and offers a Limited Lifetime Warranty with all locking tools.