This 6in / 152mm Bar Clamp features a long metal heat treated bar and is designed to withstand the pressure of holding large and heavy workpieces. It is capable of many types of clamping due to the strength of the bar which is made from steel. The length of the bar means the clamp can easily hold long or wide workpieces in its jaws. It comes with non marking pads so not to damage any work piece and can be used one handed the pads are reversable so you can use it as a spreader bar for gently forcing or keeping work apart.