The Milwaukee Tool 48-89-2733 27/64" S&D Black Oxide Drill Bit is a high-speed steel drill bit designed for optimal performance in metalworking applications. With a 135 degrees split point and reduced shank, this silver and deming drill bit provides precise and efficient drilling. The black oxide coating enhances the durability and heat resistance of the drill bit, ensuring long-lasting use. This 5-1/2 inch long drill bit is perfect for Pilot Point drilling and is a reliable addition to any machining tool collection.