These clamps are reliable and effective, you can never have enough. Their box joint design ensures both strength and correct alignment of the jaws. A spring-loaded pawl engages onto a toothed steel bar as the handles are squeezed together giving positive non-slip clamping with a clamping force of 343 N and 392 N. Simply pressing the lever between the handles releases the clamp. The handles have non-slip moulded inserts to increase grip and the shape makes them easy to squeeze. The jaw pads have a cross vee to clamp round or irregular pieces. The pads swivel for even contact even when clamping non-parallel surfaces.