The Bosch 18SG-7 7 in concrete surfacing attachment dust collection system reduces clean-up time and provides cleaner, safer air for user.Dust collection reduces cleanup time and provides cleaner, safer air for userRemovable nose piece quickly removes for flush surfacingReplaceable brush ring low cost maintenance vs competitionCompletely tool-free compatible with all 1800 Series and 1900 Series large angle grindersBosch airsweep vacuum compatible plug and play without using adapters