... .Usage:cut and polish granite,marble,glass,concrete,ceramic,til diamond grinding disc1.Dimensions:1) Diameter: 100mm;2)Thickness:0.8-1 ... ) Hole size: 16mm,20mm,special hole size is accepted.2. Diamond grit: 40 - 120 available.3. Coating: nickel, chrome, titanium ... . 4.Smooth cutting surface, high cutting speed.5. Cutting and grinding. 6.Usage: Suitable for cutting various hard Non-ferrous materials ...