5Pcs Milling Cutter Drill Bit M3 M4 M5 M6 M8, 4 Flutes Straight End Mill Cutter, HSS-AL High Speed Steel Slotting Counterbore End Mill Cutter for Copper, Aluminum, Steel, Cast Iron

5Pcs Milling Cutter Drill Bit M3 M4 M5 M6 M8, 4 Flutes Straight End Mill Cutter, HSS-AL High Speed Steel Slotting Counterbore End Mill Cutter for Copper, Aluminum, Steel, Cast Iron

• Specification: Drill milling bits include 5pcs. Each end mill cutter has a its own bootxblade diameterxshank diameterxfull length: M3 (3.2x5.9x6x45mm), M4 (4.2x7.4x6x48mm), M5 (5.2x8.9x6x51mm), M6 (6.2x10.4x8x58mm), and M8 (8.2x13.4x10x67mm)
• Efficient Work: Milling machine drill bits are specially designed for high speed cutting, reducing the frequency of tool changes and enhancing efficiency. Slotting milling cutters set helps to save time during mold manufacturing and production
• High Speed Steel: Milling cutter drill is made of HSS-AL super hard high speed steel, with a hardness grade of HRC 65 to 68°. Countersink slot end mill cutter is tough and can still provide long cutting life under harsh processing conditions
• Precision Fit: Straight end mill cutter is specifically designed for high precision alignment of holes processing, so bolt heads and screws are accurately inserted. Counter bore drill bit is a solid option for machining precisely sized holes
• Widely Used: Milling cutter drill bit is suitable for milling tasks on materials such as copper, aluminum, steel, and cast iron. Countersink milling cutter can be directly processed or undergo fine processing before undergoing heat treatment