This tool can be used for dry grinding or wet grinding. The advantages and disadvantages are as follows: Wet or Dry Advantage disadvantage Wet Grinding The water can cool the diamond cup wheel when working;So the diamond cup wheel has a little longer lifespan; Will create slurry and it is hard to be deal with Dry Grinding Won't create slurry You need a vacuum cleaner Quick Details: Item Number SYF-K05 Color Bright Blue Connection Type φ22.23mm Segment Details 6 pieces of "F" type segment Working Condition Wet or Dry Diamond Grit 36#, 46#, 60# Application grinding different hardness of concrete floor. Applied Machine angle grinder Packing Details 1pc/box Lead Time 7-15 days after order is confirmed. MOQ 10pcs Optional Specifications: Optional size 100mm, 115mm, 125mm, 150mm, 180mm, and 230mm Optional connection 22.23mm, M14, and 5/8"-11 Optional diamond grit 36#, 46#, 60# and others Optional bond type extremely soft, very soft, soft, medium soft, hard, and very hard SYF-K03-7SYF-K03-7ASYF-K03-7CSYF-K05