Check out this Diablo Tools hammer drill bit system•This bit has a steel dust sleeve built in that when used with the Snap-lock adaptor attached to a vacuum removes all the dust while drilling and create a clean hole for epoxy and anchor replacement•This bit has a 4-cutter full carbide head and that little cap with the spring contributes to the dust extraction•Running it on the 40v Makita SDS-Plus Makita Tools USA Makita Canada ...#tools #construction #concrete #diablotools #diablopartner #makit

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