This 18-inch Locking Clamp with Regular Tips has wide-opening jaws to provide greater versatility in clamping a wide variety of shapes. Vise-Grip Locking Clamps have a very powerful locking mechanism. The locks work with the squeeze of one hand. Vise-Grip Locking Clamps are made of high-grade alloy steels that are heat treated for maximum toughness and durability. The adjusting screw gives exacting pressure. Simply turn the adjustment screw to change the jaw opening and clamping pressure. It will stay adjusted for repetitive use. The guarded release helps keep work fast and safe. The guarded release trigger quickly unlocks. Vise-Grip is the only locking tools people ask for by name. Full lifetime warranty. Each Vise-Grip tool is warranted to be free from defects in, material and workmanship for the life of the tool, except for damage caused by abuse, misuse, or alteration.