DescriptionMaterial:Body and jaw segments tool steel.Version:Body hardened. Jaw segments hardened (49-51 HRC) and black oxidised. Wedge faces ground.Note:The compact design makes these double wedge clamps ideal for horizontal and vertical series clamping. The hardened and ground wedge faces can exert high clamping forces. These wedge clamps can be mounted in grid holes or T-slots. Tightening the DIN 912 socket screw pulls the wedges together and the jaws out pressing the workpieces against the fixtures fixed stops. The double wedges create a positive down force.