Diamond Core Drill Bit Core Drill Bit Core Drill up to 400. The description of this item has been automatically translated. 10mm professional MATRIX roof segments. Example images of drill bit 92 mm diameter. Core drill bit Matrix with 1¼ UNC connection, usable length 450 mm. Suitable for concrete with strong reinforcement and hard aggregates, hard natural stone. Super premium diamond core bit with 10mm matrix roof segment. Specially developed for concrete, drilling and sawing services. Best performance in Allen types of concrete (including blue concrete). Extremely high speed and excellent free cutting properties in very hard concrete and stone. Consistently high diamond concentration (matrix technology). The invoice with VAT shown. You must check the desired billing address before purchasing. Messages outside of the checkout process, e.