These TCT Multi-Purpose drill bits from Fisch tools are designed to perform in a wide variety of materials: wood, metal, tile, brick, concrete. They feature ultra-durable 118° carbide tips that are sharpened on four edges, and the bits are self-centering for easier penetration without problems with wandering. The ''S'' Flute design is optimized for better clearance and chip removal. Includes five common drill bit sizes in a clear plastic storage case.