General description For drilling in all kinds of materials, the Bosch 7 Piece Robust Line Multi Tile Multi Purpose Masonry Wood Drill Bit Set is designed to deliver precision and durability. It features a centring tip for a precise drilling start and excellent guidance in the drilled hole. Technical specifications Material: Fine grade high durable carbide Design: 4 flute dura design for better wear resistance Special features: Diamond ground cutting edges for multi-purpose drilling Optimized brazing and hardening technology to enhance robustness and reduce vibration Usage Suitable for drilling in concrete, masonry, brick, eternit, light building materials, multi-layer materials, ceramics and tiles, wood, plastic, sheet metals, and aluminium Provides perfect results when drilling with or without impact