Torquata T-Track Cam Clamps for clamping jigs and fixtures. Cam clamps give you quick release for clamping jigs and fixtures. Simply thread the cross dowel on to the 5/16-inch t-track bolts in the Baladonia range and then lever down to clamp completely. Great for jigs where repeated clamping pressure is required on the same thickness material - like fences etc. Quickly tension and release by flipping up and pushing back down. Each pack contains two clamps, two 5/16-inch cross dowels and four rubber washers so the work piece is not marked.