TEKTON Locking Pliers and C-Clamps are ideal for clamping and holding together a variety of materials including flat stock, L-angle, and sheet metal. The pull-to-release lever makes it quick to set, reposition, and release the clamp or pliers with1-hand and with more control than traditional levers. Turn the knob to change the tension and position of the jaws. The adjustment knob is large and knurled to make it easy to grip even with slippery hands or while wearing gloves. Insert a screwdriver or hex key through the knob hole to apply even more leverage. The clamps and pliers are shot-peened and finished with a durable nickel plating that resists corrosion.