The Hold Down clamp slides in the T-Slot Track sold separately and quickly secures with the turn of the hand knob. By turning the clamp head 180 degrees to the work piece, the clamp offers a dual capacity of 0 to 3/4-Inch and 3/4-Inch to 2-1/2-Inch depending upon the size of the work piece.

Dimensions(LxWxH): 5 x 2.3 x 0.3 in
Weight: ‎0.02 Pound
Color: Black, Silver
Material: Steel, Plastic

You are buying 4 Hold Down Clamp