Accomodating one-hand operation, the 10-inch Smartgrip Automatic Adjusting Pliers (by Knipex) makes self-controlled adjustment simply by squeezing the handles, which is ideal when there's frequent change-over to workpieces of different sizes. Features of the tool include: locking lever for space saving transport with closed handles; fine adjustment for favorable handle-width; slim dimensions for better access in tight work areas; box-joint design; hardened teeth on gripping surface that eliminates chance of slippage once locked on the object; low required hand-force; guard to prevent fingers from being pinched; self-locking on pipes up to 1 1/4-inch and nuts up to 1 3/8-inch.