Quick Details: Item Number SYF-K23 Color Blue Connection Type φ22.23mm Segment Details 9 pieces of boomerang segment Diamond Grit 36#, 46#, 60# Application grinding concrete floor Applied Machine angle grinder Packing Details 1pc/box Lead Time 7-15 days after order is confirmed. MOQ 5pcs Concrete grinding disc one of the diamond cup wheel which used for grinding the concrete and it usually comes in a steel body and uses high-frequency welding. Different from sintered diamond cup wheels, the segments of high-frequency welded cup wheels are formed through high temperature and pressure. It has a high concentration of diamonds, which contributes to high performance and long lifespan. This 7 inch concrete grinding disc is newly designed with 9 "boomerang" segments. It provides extra sharpness and can speed up your grinding works. Sunny Superhard Tools provides various great bonds for grinding different hardness of concrete. "Quality is our culture" - We insist on offering the best concrete grinding disc with competitive price. Sunny Superhard Tools provides you with different types of premium 180mm concrete grinding discs: These tools 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 Will sacrifice a little of lifespan;You need a vacuum cleaner 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-K08