Single spindle design of the WS-6 is quick & easy to use. This large version of the WS-3 also has a free floating jaw that allows you to clamp dissimilar thickness/width work pieces together at a perfect 90°. The die-cast jaws are plastic coated to protect work piece and it's open design allows ample clearance to screw, dowel or staple material together while gluing process. Purchase a pair of TK-6 table-clamps and you will be able to clamp your WS-6 to your work surface. BESSEY. Simply better.