DeWalt Extreme SDS Plus hollow drill bits have an Airlock compatible dust extraction port built into them which is simply connected to an external dust extractor to suck out the drilling dust while the bit is in use. Compared to some alternative dust extraction solutions this frees up weight on the tool for reduced fatigue and can be easily swapped between machines as required. Integrated dust extraction helps prevent workers from being exposed to harmful dusts and saves time required for clean
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