Our MX4 4-Cutter SDS Plus Rotary Hammer Drill Bits with solid head carbide deliver up to 5x longer life in concrete with rebar. 4-cutter design prevents lock-up in rebar， reducing downtime. Variable flutes remove dust faster， reducing heat and delivering up to 20% more holes per battery charge. The wear mark indicator on each drill bit shows you when they no longer meet the ANSI requirement. Choose from single bits， bulk packs， or drill bit kits in a variety of sizes.
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