drum polishing pad 1)Speed:1800-4500 RMP 2)Wet use only 3)7 Pcs per set 4)Be used for polishing marble,granite... drum polishing pad,wet polishing pad,polishing abrasive,dry polishing abrasive,polishing pad,floor polishing padssharp and durablediameter:50mmGrit:50#--3000#Thread:5/8"-11,M14