Milwaukee 6 Piece SDS+ Dust-Lok Dustless Drill Bit Set Inc Bits, Vacuum Adaptor & Case - 4932471162Milwaukee's SDS+ drill bits are designed for the most demanding tasks in areas where dust and debris cannot be allowed to settle. On sites operating without dust, a Dust Lok system is essential for a safer, cleaner work environment. Not only does it help prevent serious lung diseases by reducing the inhalation of concrete dust, but it also keeps surfaces cleaner by minimising the settling of dust and debris on carpets and stops stains and fingerprints