This handy clamp works with all kinds of materials, from thin 1/2" plywood to thick 2x4 boards. Automaxx® technology adjusts automatically to material thickness. Automaxx® auto-adjust technology. Clamp Using the Pocket Hole The steel pin on this clamp is shaped to fit snugly into a pocket hole, securely anchoring one workpiece against the other for easy assembly.
eBay