Century Drill and Tool 40113 Veining TCT Carbide Router Bit, 1/4-Inch Premium micro-grain carbide tips provide a stronger sharper cutting edge reducing wear for a longer tool life Heat treated fully hardened bodies prevent breakage or bending under stress Anti-kickback design for maximum safety during initial starting cuts For decorative designs lettering and freehand cuts 1/4-Inch shank fits all standard routers