... material: Original tungsten carbide5. Hardness: 92HRC6. Type: Milling inserts, Regular7. Coating/Coverage: Uncoated8. HRC: for 35HRC work material9. Usage: ... Features:Made of high hardness raw carbide material, high durable and strength. Special grade for aluminum milling, very high cost ... choicesWe have different series of carbide cutters for choices, which can be for 45/55/60/65HRC work materials, ...