C-clamps have large throats to easily fit over awkward project pieces. A locking C-clamp also locks-down tight, and adjusts with a turn screw to produce just the right amount of clamping force; retains that adjustment for repetitive tasks. Trigger release lets you remove it quickly when its work is done. Swivel pads help give you a secure grip on tapered pieces and delicate projects without marring your work surface. Crafted of heat-treated alloy steel for a long working life.