Up to 3x faster than a standard drill bit. Spade bits are a great accessory for electricians and other installation and construction workers. The Expert SelfCut Speed features advanced designs for spade bits, making it easy to use and highly practical for heavy professional users. Threaded tip draws the spade bit into wood with only the lightest pressure from the user, which is especially helpful when drilling upside down or in tight niches. Advanced paddle design ensures extra speed. Suitable for softwoods, chipboard or particleboard. Offers efficiency and convenience to tradesmen who need to drill through holes or blind holes for cabling, dowels and other hardware installations. Hex shank for maximum power transfer in standard 3-jaw drills and hexagonal screwdriver chucks.