... its cutting efficiency higher, working life longer, cost lower and performance higher. Diameterlengthshank16mm40mmG1/2''25mm50mmG1/2''50mm50mmG1/2''75mm50mmG1/2 ... .5, Cutting granits,concrets,rebars,ceramics,glass,woods,plastics and so on,which is highly efficient.6, Strong structure ... away from the blocks of serious pollution with the electroplating-made super hard abrasive tools replaced by the high- ...