The Milwaukee 49-40-6101 Surface Grinding Dust Shroud provides users with a solution for the regulation on respirable crystalline silica dust (29 CFR 1926.1153). The 49-40-6101 is optimized for surface grinding applications with both AC and DC Milwaukee small angle grinders. Attach to the Milwaukee 8960-20 8 Gallon Dust Extractor for a complete Table 1 OSHA Compliant solution.