Expert SelfCut Speed Flat Bits give maximum speed drilling in wood, softwoods, chipboard or particleboard The Bosch 2608900315 is a Flat Drill Bit with an 16mm diameter, 152mm in length and a 1/4 inch shank. Spade bits are a great accessory for electricians and other installation and building workers. What if they could be even faster and more efficient? With Bosch Tip Technology, they can. Equally at home in softwoods, chipboard or particleboard, the Bosch EXPERT SelfCut Speed Spade Bit offers efficiency and convenience to tradesmen who need to drill through holes or blind holes for cabling, dowels and other hardware installations. suited to rotary drills, rotary impact drills and impact screwdrivers. Features: 3x faster than a standard drill bit Maximum Speed Drilling in Wood Fast drilling is easy with Bosch Tip Technology Self-feeding thread for effortless drilling and speed. Hex shank for maximum power transfer in standard three-jaw drills and hexagonal drill driver chucks Clever