General Tools & Instruments 856S 2 Heavy Duty T-Track Carriage Stops This kit will get you started using the stops for work holding and light machining applications Machined from aluminum for durability Designed to work with our T-Track Table, the stops also work with any number of jigs, router tables with t-tracks Short Stop measures 1-1/2'' x 1-1/2'' and has a T-slot keyway running parallel to the stop face All stops are approximately 5/8'' tall with the knob in the down position