Makita B-63834 9/16" x 24" SDS‘Max Dust Extraction Drill BitMakita B 63834 There is increased awareness of dust extraction, so if youre drilling concrete get the best solution with the Makita SDS MAX Dust Extraction Drill Bit. The Bit features dust extraction holes so when used with a rotary hammer and dust extractor (sold separately), it offers drilling and hole cleaning in one step, and reduces airborne silica dust. Makita SDS MAX Dust Extraction Drill Bits are an OSHA Table 1 compliant solution when used in