The MICRO 100 BMR-023-2X AlTiN - Aluminum Titanium Nitride - miniature, uncoated, solid carbide, 2 flute, 30? helix, center cutting, ball nose end mill. Designed and engineered for milling applications in softer type materials requiring increased ship evacuation. 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.