Bosch 2608587580 SelfCut Flat Drill Bit with Hex Shank 25mm x 152mm The Bosch 2608587580 Flat Wood drill bits are designed for drilling soft and hardwood as well as light building materials such as plasterboard. They are manufactured from specially hardened steel with precision ground tips and cutting edges for dimensionally accurate holes and are capable of drilling up to 5x faster than standard spade drill bits. Features: Drill up to 5 times faster than standard spade drills Flat Wood drill bits suitable for Hard Wood, Soft Wood, Plasterboard/Drywall Innovative self-feeding threaded tip for fast and accurate drilling with little exertion of force The precision-ground tip and cutting edges gives accurate dimensional stability during heavy drilling Specification: Bit Type: Flat Length: 152mm Shank Size: 1/4\" Head Size: 25mm Product Material: Steel Accessory Fitting Style: Hex