The Milwaukee 49-40-6190 18 in. Hose Adapter is compatible with all Milwaukee Universal Surface Grinding Dust Shrouds ; The Hose Adapter connects to the Shroud and fits most industrial type vacuums ; The Milwaukee Universal Grinder Dust Shroud works universally across most pro-brands, while competitor’s shrouds are proprietary to their own grinders ; These shrouds feature a durable and lightweight design with a convenient clear window for easy navigation ; The purpose of grinder shrouds is to reduce exposure to dangerous debris, crystalline silica, and dust particles that can cause health issues for users who work with stone and concrete ; Quick attachment from shroud to most industrial type vacuums ; Dual swivel ends: allows for fluid movement and helps prevent hose bind up ; Compact and flexible for easy access in tight spaces ; Use with Milwaukee 49-40-6100 and 49-40-6105