Material: Cutter is Made of Super High Quality Carbide,High performance for Anti-Shock, Durable Coating: TiN, High Aluminum Content Provides Excellent Hot Hardness and Oxidation Resistance Special Features: It is Widely Use in Arc Semi-Finish Machining, Work pieces: Various Carbon Steel, Alloy Steel, Stainless Steel Processing Package: Each One is Packed in a Separate Plastic Box, Safe to Store and Take Out.