Product features: 1) Will work with any T track that accepts 1/4" or 5/16" T bolts 2) Will securely hold stock from 1/4" to 2" thick against your table 3) Will work on drill presses, router tables or any jig with a T track 4) Body made from anodized aluminum, screw and round clamping foot are brass 5) 1-1/2" diameter knob is easy to grasp and turn