Amana - A201020 20mm R/H 57mm Long Carbide Tipped Brad Point Boring BitAmana A201020 20mm R H 57mm Long Carbide Tipped Brad Point Boring Bit Industrial Brad Point Boring Bits are coated with a non stick coating for longer lasting cutting edge and tool life. Amana Tool dowel drills are coated with a special Polytetrafluoroethylene (PTFE), a non stick color coating. In cases where the carbide tip cutting edges are coated, there is no need to sand the coating off before use. Once the tool starts drilling, the coating is