Yonico 14988 90 Degree V Groove & Lettering Router Bit with 1/2" Shank, 1/2" x 7/16" Industrial Quality Router Bits C3 Micro-grain Tungsten Carbide Cutters Solid Hardened Steel Bodies with Anti-Kickback Design Build-up & Heat Resistant Teflon Coating Satisfaction Guaranteed & Lifetime Warranty