... polish granite,marble,glass,concrete,ceramic,tile et Diamond tools/diamond cutting Disc/Diamond Blade/Diamond Saw BladeWe are able to supply various ... ) Hole size: 16mm,20mm,special hole size is accepted.2. Diamond grit: 40 - 120 available.3. Coating: nickel, chrome, ... .Smooth cutting surface, high cutting speed. 5. Cutting and grinding. 6.Usage: Suitable for cutting various hard Non-ferrous materials ...