Double cup wheel 1. Material: Diamond powder 2. Package: 1pc/color box 3. Certificate: MPA,ISO 4.Good quality. Double cup wheel 1. Material: Diamond powder2. Package: 1pc/box3. Certificate: MPA Application:Stone, tile, porcelain, masonry, concrete. Machinery:Angle grinder, surface preparing machine... If you are interested in this product , please inquire us for more information...