The Milwaukee 49-40-6120 7 in. / 9 in. cutting dust shroud provides users with a solution for the regulation on respirable crystalline silica dust (29 CFR 1926.1153). The 49-40-6120 is optimized for cutting applications with both AC and DC Milwaukee large angle grinders. Attach to the Milwaukee 8960-20 8 Gallon dust extractor for a complete OSHA table 1 compliant solution.