This line of diamond core bits is suitable for holes deeper than 2 mt. As the core cannot be extracted from the wall as in traditional core drilling, this system allows the hole to be drilled by screwing the extensions onto one another while keeping the core inside the core bit. On request, they can be supplied with core lifters and stabilisers to prevent the core bit from deviating from its path. The tool is available in three versions: Impregnated, Surface-set or Polycrystalline (PCD) core bit, and all can be ordered for wet or compressed-air use. As this is a highly technical core drilling system, SEA Technology recommends consulting its in-house technician for advice beforehand.