Carbatec Hold Down Clamps are designed to be used on most 1/4" or 5/16" T-track systems, and are a great way to hold you work firmly down to machine tables and other components, and a great addition to your home made jigs. Clamps come complete with a Mitre Slot saddle, which will allow the clamp to be fitted to any 3/4" x 3/8" mitre slot, with an captive undercut. Large and small clamp sold individually.