Feature●Used with the new style DX6 Kurt 6 inch Vise●Slips in bottom holes machinined in the DX6 Vise●1 package consists of 2 keys and 2 retaining o-rings●Fits Tables that have a 18mm (0.708") slot width●Fits many Machines like- OKUMA●Manufactured from AMERICAN 4140 SteelDescription vise keys are used to align your vise to your milling machine table.