Diamond floor grinding head: For granite, marble,concrete polishing & grinding Dry and wet use Size: 3" - 10" Diamond tool - diamond floor grinding head is made ... you to the best of our ability. Item No.:diamond floor grinding head Diameter: Grit:#6, #16, #30, #50, #100, # ... For granite, marble concrete polishing & grinding.2. Total Coverage about 40,000 - 60,000SQ.Ft. Given 12 discs per cut, this ...