Metabo's 7-in. Angle Grinder Surface Prep Kit for use in concrete surface grinding includes the Metabo W23-230 large angle grinder and a dust control shroud to protect the user from harmful debris. The 7-in. shroud includes a stabilization handle, molded vacuum ports and a punched relief hole to prevent vacuum lock. The kit can be used with an optional ASR 2050 quiet operation vacuum featuring soft start, changeable pleated polyester filter cassettes and automatic filter cleaning.