The patent-pending design incorporates a jaw-lock pin to clamp the empty vise while machining the cavity. Then, the jaw-lock pin is removed and the workpiece can be clamped with up to 5000 lbs of clamping pressure. Hardened steel male and female threads and thrust bearing provide durability.
The compact design weighs 9 lbs and may be used for small workpieces or ganged together for larger workpieces. A universal mounting pattern will fit onto the Stevens subplate grid pattern, any T-slotted machine table, or onto the faces of tombstones.