Engraving and PCB Isolating Routing End Mill 60 Degree Tip - 1/8" Shank - Zrn Coated Made in USA 1/8" shank, 60 degree, 2 flute, "V" point tip, ZrN coated ZrN (Zirconium Nitride) coating to extend tool life and increased cut quality. Cuts the really thin grooves needed to isolate traces. One Piece. Made in USA