MICRO 100, VHS-312-5-020, the "V-HEMOTH", variable helix, 5 flute, high velocity, stub length, solid carbide end mill. Designed and engineered with a variable helix and defined nose radius for high production, high speed milling, and excellent surface finished. The end mill also features an "offset" flute pattern that aids in the elimination of chatter and reducing machine vibration. Best suited for those hard to difficult to machine materials. MICRO 100 Solid Carbide Tools feature more than just a micro-grain of excellent quality. Their substrate is in a class of its own resulting from an exclusive treating processes that allow for increased speed and feed rates and allowing for longer tool life. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed.