With the Milwaukee 4932492057 SDS-Max tct tunnel bit, you drill deep 55 mm penetrations through thick walls and heavy structures in a single pass. Its solid one-piece steel design measuring 990 mm eliminates the need for separate adapters or extensions, transferring maximum impact energy directly to the cutting face. The 3-cutter centering tip allows you to start drilling with pinpoint accuracy without wandering off target. When encountering reinforced concrete, integrated rebar chamfers protect the carbide teeth from breakage, while three large dust removal channels efficiently clear debris from deep holes in concrete and masonry.