Designed for drilling through holes in concrete Drilling large through holes in concrete requires a proper drill bit. A drill bit with a cutting tip that is strong enough to tackle the material and a shank that remove pieces of concrete and dust efficiently. Like the PRO SDS max Break Through Drill Bit designed to help you drill large through holes time and again. The PRO SDS max Break Through punches into the material with its 3-cutter tip. We made it from high-quality carbide that was vacuum-brazed and hardened for strength and long-lasting performance. The drill bit s U-shape, two flutes, and tapered shank prevent dust and pieces of concrete from clogging it. Use it to drill holes between 45 and 80 mm in diameter. Fits all SDS max rotary hammer drills Features and Benefits: Designed for drilling through holes in concrete Fits all SDS max rotary hammer drills For efficient drilling large through holes in concrete, eg when installing electric cables and pipes Highly efficient for interior construction workers, electircians and installers: Long Life Specifications: Diameter (D) mm: 65.00 Working length mm: 850 Total length mm: 1000.