Cuts t-tracks for 1/4" hex bolts with 3/8" head. 1/4-inch shank. Create t slots for custom jigs and hold-downs or for picture frame keyhole hanging Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge For use on table mount and handheld router Silver induction brazing for maximum strength and durability, Weight: 0.02 Pounds, Manufacturer: Yonico