Deep Holes in Concrete - The SDS max-9 BreakThrough Drill Bit is standard when drilling large and deep holes in concrete. Its 3-cutter tip made from fine-grade carbide is vacuum-brazed and hardened to enable fast results and good removal of large pieces of material. The bit´s long tapered shank makes breakthrough-drilling possible, while its 2-flute U-shape design provides good dust removal. The bit is intended for breakthroughs with diameters from 45 mm to 80 mm in concrete, masonry and limestone, e.g. for fixing cables and pipes outside. It is intended for use with rotary hammers. Note: Always ensure that you use hammer drills with suitable capacity for breakthrough-drill bits to avoid overload. Observe the operating instructions of the rotary hammer. Fits all SDS max rotary hammer drills. Features and Benefits • Standard for Drilling Large and Deep Holes in Concrete • SDS max-9 BreakThrough Drill Bit is standard when drilling large and deep holes in concrete • Vacuum-brazed and har