The SDS Max-9 hollow crown or socket sink from Bosch is excellent for drilling deep holes for switch boxes. The robust carbide surface with a fine grain ensures wear resistance during drilling. The asymmetrical carbide teeth adapt to the working speed, resulting in minimal noise. Thanks to the one-piece design, optimal power transfer from the tool is guaranteed. Due to the two-spiral U-shape of the shank, this hollow drill crown is ideal for transporting drill cuttings as well as for breakthrough drilling.

Product information:
Compatible with SDS max drills.
Suitable for: high-density lime sandstone, bricks, clinker, masonry.