Milwaukee 48-22-3532 Torque Lock 6&rdquo; Locking Spring Loaded Metal C-Clamp w/ Regular Jaws TORQUE LOCK: A twist-locking mechanism at the bottom of the handle gives you extra locking force. It is an open keyhole design that lets you thread a screwdriver through to apply additional torque WIDE JAWS: These jaws open extra wide to allow you to grip a variety of shapes HARDENED JAWS allows for improved gripping strength against a variety of materials FORGED ALLOY STEEL gives this clamp extra durability for industrial applications RUST PROTECTION: The metal is coated to prevent against corrosion while its in long term storage