The double posts mount in 3/4 inch (19 mm) holes. The forward post has a clearance hole to guide the clamping rod, and a wedging mechanism that anchors it firmly in through-holes in material as thin as 1 inch (25 mm) (depending on the strength of the material) or in blind holes at least 1-5/16 inch (33 mm) deep. The rear post seats in blind holes at least 2 inch (51 mm) deep and has a quick-release mechanism for adjusting the projection of the rod.
Rotating the post slightly disengages the threads, allowing the rod to slide freely. Re-aligning the post engages the threads for clamping. The 19 inch (483 mm) rod has a stainless-steel swivel handle for applying clamping force in any position. The removable magnet-mounted flat jaw is through-drilled for attaching customized jaws for specialized work, and projects only 3/4 inch (19 mm) above the work surface, giving virtually unobstructed access to the workpiece. This is a versatile vise.