Ougar8 HRC62 1.5mm 4 Flutes D1.5D450mm CNC Milling Cutter Square Flat Tungsten Carbide TiAlN Coated Machine Cutting Hard Shank End mill Endmills Spiral Bits Grain Micrograin Solid Carving engraving Tool 1. Raw material: High quality tungsten carbide. 2. Square Flat End Mill. TiAlN Coated Micrograin Carbide Of Hardness HRC62 3. 4 Flute; Cutter:1.5mm(0.059") ; Shank:4mm(0.157"); Overall length:50mm(1.969") . 4. Package included: 1x End Mill Cutter CNC Bit 5. Usage:For CNC,Engraving Machine.Stainless steel,inconel,Pcold rolled steel,titanium,cast iron &tool steel.