- Achieve superior precision, speed, and quality when cutting aluminium on your cnc machine with the 6.2° Amana Tool 46470 Metric Aluminium Tapered Ball End Router Bit (6mm Shank). Specifically designed for machining aluminium materials, these router bits ensure clean, accurate cuts while maximising efficiency. Perfect for carving and shaping aluminium with ease and reliability Amana Tool Amana Tool’s cnc machine router bits are crafted from premium sub-micron grain carbide, ensuring exceptional durability and precision. Utilising an advanced edge processing system, each router bit is finished with a mirror-like polish and a razor-sharp cutting edge. This meticulous process results in clean, precise cuts, minimal chip re-welding, an outstanding surface finish, and. most importantly. an extended tool life. ZrN-coated router bits from Amana Tool are engineered for maximum productivity. The ZrN coating reduces material buildup in the flutes while enhancing the hardness of the cutting edge compared to standard carbide. This results in smoother cuts, improved efficiency, and a significantly longer tool life.