... 80 percent,as a result,the tools would be more sharp,what’s more,the grinding force and the grinding temperature ... to the hight of 70-80 percent of itself.5, Cutting granits,concrets,rebars,ceramics,glass,woods,plastics and so on ... . Coating: nickel, titanium available6. high cutting speed7. Suitable for cutting various hard Non-ferrous material, such as marble granite, glass, ceramic, hard concrete and ...