Fixed at 90 degree, easily clamp miter joints and butt joints with Pony corner and splicing clamps. The die-cast aluminum frame and sliding jaws hold workpieces up to three inches wide and leave joints fully exposed for miter correction, doweling, gluing, or nailing. Plated, cold-drawn steel screws with smoothly rolled threads ensure durability and reliability. Two countersunk holes allow you to mount the clamps to benchtops. Four clamps mounted as much provide a rectangular clamp fixture of unlimited size.