The MICRO 100 CRE-625-218X AlTiN - Aluminum Titanium Nitride - coated, solid carbide, 3 flute, corner rounding, double ended end mill. hard milling end mill. Designed and engineered with a formed radius for milling a specific radius in most ferrous and non-ferrous type materials. End mills can be utilized for both roughing and finishing. Manufactured with close tolerances to ensure ultimate precision and performance. AlTiN coatings are high performance and versatile. Has a higher breakdown temperature while maintaining high surface hardness at elevated temperatures. This type of coating also promotes tool life and allows for faster feeds and speeds. Excellent for dry machining applications. Applicable with oxidation temperatures up to 800? C or 1450? F. AlTiN coatings are best utilized on alloy steels, stainless steels, tool steels, nickel alloys and titanium. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed when it comes to solid carbide tooling.