Milwaukee SDS+ MX4 Set-7pc

The bits have a welded solid carbide tip (on 5-10 mm dia). This allows for wider flute entrance leading to increased speed. More carbide leads to a higher durability of the tip and higher lifetime. Features a new variable flute design: Thin flute at the tip for maximum debris extraction, higher speed and less friction. Thick flute at the base for higher stability and reduced bit breakage. Up to 20% more holes per battery charge vs 4 cutter drill bit in concrete and vs. previous generation.