The Multi-Construction Bit delivers high drilling performance without a drill bit change, regardless of the material. A diamond ground tungsten carbide tip with distinctive geometry allows the bit to perform in all materials and work faster than conventional drill bits. The bit also features a robust head for long service life and impact applications, even in concrete and steel. A steep spiral flute quickly removes debris and provides the traction needed when encountering different materials. Bosch Power Tools & Accessories. 877-267-2499.