1 x Bahco 9631-6-400 Long Flat Bit 6mm The Bahco 9631 Long Series Flat Bit is longer than a standard flat bit, useful for reaching awkward spots or for drilling accurate, deep holes into wood. It has a positive cutting angle which drills holes twice as fast and lasts three times longer than a conventional bit. Made from high-carbon steel and heat-treated all over. The hardened blade is forged directly from the round shaft. The winged shoulders enable the bit to first cut the wood and then remove the material from the centre section, ensuring a smooth finish and superior swarf clearance.