Harvey Tool 853112-C6 | 90 Degree Included Angle x 0.0910" LOC x 3/16" Shank AlTiN Nano Coated Carbide Engraving CutterEngraving Cutters Tip Radius 2 Flute For Hardened Steels is a fully stocked, solid carbide tool that features a strong 2 flute design for engraving hardened steels 46 68Rc, and an eccentric relief to increase durability and tool life. Strong 2 flute design for engraving hardened steels 46 68Rc Eccentric relief increases durability and tool life Tip radius end diameter and shallow flute design for improved cutting and strength Latest generation AlTiN