MICRO 100, TPG-432, positive rake, all surfaces ground, indexable insert. Designed and engineered for clamp style tooling. Ideal for turning and is extremely heat-resistant when used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials. Offers problem free chip forming in most types of 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 process that allows for increased speeds and feeds and extended tool life. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed.