This spade bit features a 1/4-inch hex shank system, ideal for use with portable power drills. The Self-Cut Speed Spade Bit is designed for extremely fast hole drilling. Its self-feeding threaded tip allows the drill bit to effortlessly pull itself into the wood, enabling high-speed drilling with minimal effort. The specially shaped spade ensures fast chip removal for quick results. In product tests, this drill bit achieved holes up to 10 times faster than a standard spade bit. It is suitable for soft and hard wood, light building materials, and plasterboard. Experience up to 3x faster drilling compared to standard drills. The flat milling drill bits are excellent accessories for electricians, installers, and construction workers. Bosch Tip Technology enhances drilling speed and efficiency. The Expert SelfCut Speed offers advanced flat milling drill bit designs for ease of use and convenience for professional users. The patented Bosch threaded tip draws the flat milling drill into the wood with minimal user pressure, which is particularly useful for overhead drilling or working in tight spaces. The advanced paddle design contributes to increased speed, providing craftsmen with efficiency and comfort for drilling through holes or ground holes for installing cables, wires, or other hardware. It has a hexagonal shaft for maximum power transmission in standard drill chucks and hexagonal holders.