Extra Long Quarter Inch Carbide Square End Mill 3 Flute CNC Router Bit For Aluminum Copper Alloy And Plastic 4 Inch Overall Length DLC Coated HRC 62 Pro Grade Wear Resistant 2 Pack

Extra-Long 1/4in Carbide End Mill, 3 Flute, DLC Coated
✔️ DLC coated, HRC 62 tungsten carbide, 4in length, 2-pack

Engineered for CNC routers and milling machines, this end mill is designed for deep pockets and long reach in aluminum, copper alloys, and plastics. The diamond-like coating plus precise grinding ensures sharp cuts and extended tool life.

✅ Diameter 6.35 mm (1/4 in) and 3-flute square end
✅ Overall length 101.6 mm (4 in) for deep pockets
✅ DLC coating HV7000, low friction μ 0.08-0.15, strong adhesion
✅ HRC 62 ultrafine tungsten carbide for toughness and wear resistance

💡 What is a CNC end mill used for in metalworking and plastics?

End mills shape materials by shearing and cutting, giving accurate results.

- For roughing and finishing aluminum, copper alloys, and plastics - Square-end geometry yields clean edges and accurate pockets - 3-flute design aids chip evacuation and finishes