Bosch is a leading manufacturer of accessories for power tools and is an innovation leader with 125 years of tradition. Bosch aim is to develop innovative accessories for all applications, for more efficient working and for new materials. With more than 8000 products, Bosch offers the appropriate accessories for virtually all applications, users and all brands of power tools. Tungsten carbide pilot drill bit for hole saws with cutting capacity < 60 mm with 1/4" hex shank, 118 drill bit tip. Centered, special Multi-Purpose diamond-ground carbide tips.