The Bosch 18SG-7 7 In. concrete surfacing attachment works with the Bosch 7 In. angle grinders. The guard and grinder can be part of the end-to-end Bosch PRO+GUARD™ Protection System, along with attachments, dust extractor and respiration protection (to be used as a basic summary; always use products in accordance with the ownerʼs manual and OSHA Rule 1926.1153 Table 1). This attachment is tool free, with a removable nose piece and a replaceable brush ring for low cost maintenance.