Ougar8 3mm3mm50mm CNC Tungsten Carbide Cutter 4 Flutes Square Flat Shank End mill Endmills Cutter Spiral Milling TiAlN Coated Micrograin solid carbide HRC45 Router bits 1.Material: Tungsten carbide. Main for deep Slotting Milling 2.TiAlN Coated Micrograin Carbide Of Hardness HRA92 HRC45 3.4 Flutes; Cutter diameter:3mm(0.118"); Shank diameter:3mm(0.118"); Overall length:50mm(1.97"). 4.For CNC,Engraving machine.Carbon steel,mould steel,alloy steel,inconel,stainless steel,titanium alloy etc 5.Package: 1x End Mill Cutter CNC Bit