Hold Down for T-Slot tracks

This versatile hold-down allows clamping from any point on a 1/4-20 T-slot track. It consists of an aluminum arm and a steel T-bolt; tightening the knob on the screw applies leverage to the arm, simultaneously supplying clamping force and holding the bolt in place on the track.
Hold-down capacity is 1" when using the long arm and 2" with the short arm; the asymmetrical shape of the clamp head provides throat capacities of 2 5/8" and 1 1/8".