The MICRO 100 RDD-40 uncoated, solid carbide diamond-cut routers with a fluting pattern. Designed and engineered for routing printed circuit boards made from glass fibre, epoxy resin, and composites used in the aircraft industry. Equally effective for routing plastics and other non-metallic materials. The diamond-cut fluting patterns provide for smooth rapid cutting while leaving a clean edge. This tool features a "135° drill point" design. Carbide brazed tooling typically has longer tool life than high speed steel tools and are more resistant to wear allowing for better performance in longer production runs. MICRO 100 Brazed type 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.