As an industrial and scientific worker, I recently tried out a waterstone from this brand and was thoroughly impressed with the results .As my tests showed, the double-sided waterstone not only sharpens knives and tools but also efficiently flattens abrasive surfaces with ease. The finishing products provided an excellent polish and left my tools looking brand new. The only con was the high price point, but the quality of results made it worth the investment. Overall, a great addition to any workshop..