Milwaukee® SDS Plus MX4 4-Cut drill bits are the professional solution to tackle reinforced concrete drilling with its target tip technology: sharper angled tip for exact spot drilling and a solid 4-cutter Carbide head (on Ø5-10mm) to deliver speed optimisation, longer life and maximum durability in rebar. The high volume four flute design ensures enhanced dust extraction that results in faster drilling and less wear. The variable flute design gets thicker towards the core to increase flute durability.