Robust, precise system suitable for use with all corded and cordless drill drivers and with Bosch Progressor and Bosch Carbide holesaws. Reinforced shank offers less play and greater accuracy. Features keyless system for fast and easy plug ejection and a keyless connection between power tools and holesaws. Includes HSS-G ¼" pilot drill bit, suitable for all wood, metal and plastic. Attaches to PowerChange Plus Arbor Holesaws Suitable for Metal, Wood & Plastic 11mm Hex Shank 80mm Arbor Length Suitable for use with Bosch Progressor & Bosch Carbide Holesaws Attaches to PowerChange Plus Arbor Holesaws Suitable for Metal, Wood & Plastic 11mm Hex Shank 80mm Arbor Length Suitable for use with Bosch Progressor & Bosch Carbide Holesaws