electroplated diamond disc 1.Size:100mm 2.Hole size:16mm,20mm 3.Usage:cut and polish granite,marble,glass,concrete,ceramic, diamond grinding ... ) Hole size: 16mm,20mm,special hole size is accepted.2. Diamond grit: 40 - 120 available.3. Coating: nickel, chrome, titanium ... ,Europe,Japan,Hongkong,Southeast Asia;5. The products own longer service life, reaching to the high level.6. Customized design is ...