The MICRO 100 BBM-121220 metric size, uncoated solid carbide boring tool. Designed and engineered for most machining applications that require boring/turning. Tools can be utilized for both roughing and finishing. Manufactured with close tolerances to ensure ultimate precision and performance. Each tool's cutting edge/tip has a distinctive mirror like finish that significantly adds to material removal while improving surface finishes. 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 exclusive treating processes that allow for vastly increased speed and feed rates. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed when it comes to solid carbide tooling.