Bosch 85900MC Double Flute Down Cut Spiral Router BitHighlights: Size : 1 8 inch x 1 2 inch Micrograin solid carbide ensures consistently smooth finish cuts, with superior wear resistance Template cutting when downward pressure is advantageous for clean, accurate cuts; augering action clears chips from the cut Downcut spiral design used for downward chip flow and the best finish on the top side of the workpiece Solid carbide build provide the best rigidity and long life, for faster feed rates and chip