Applications: brick, masonry Precise, accurate drilled holes Very smooth running due to asymmetrical tooth arrangement Reduced friction and improved drilling dust removal Special lightweight construction for better handling Replaceable centering drill bit The adapter and the drill bit are not included Drill bit head: interchangeable and sturdy core bit body, replaceable centering drill bit with 2 cutting teeth, asymmetrical carbide tooth arrangement, sharp tooth edge Shank: core bit body with an outer flute, asymmetrically offset drill wall holes, core bit mounting M16 thread Insertion end: SDS-PLUS, HEX.