Mitee-Bite? OK-Vise? Clamp DK2-WTI Double Wedge, Serrated Jaws, 1/2-13 Screw, 20,000 lbf Holding Force. The double-wedge pull-down clamps generate a pull-down action pressing workpieces down onto the fixture base. Jaw serrations create high friction, which ensures reliable clamping in any circumstances. OK-VISE low-profile clamps expand when they are tightened down, simultaneously pressing the workpieces against the guide and preventing their movement. They are designed to take up very little space on the fastening base. Small in size, yet with an excellent clamping force, these clamps guarantee a holding capacity that clearly exceeds the load of machining forces.?Fastening with only one bolt ensures quick set-up times. Mitee-Bite? Part #47150