With the Bosch diamond core cutter, you drill smoothly and dry through masonry, brick, and limestone. Thanks to the 112 mm diameter and 400 mm working length, you create clean penetrations for waste pipes and ventilation ducts quickly without water mess. The 6 laser-welded diamond segments with an 11.5 mm height provide high durability and an easy drilling start. With the standard 1 1/4" unc fitting, you mount the bit directly onto compatible diamond core drills.