Отзыв о Алмазное бурение по фарфоро-гранитной кладке от Jason Daves

These Industrial and Scientific drill bits were a major disappointment.They were unable to handle the basic tasks of drilling through porcelain and masonry, despite their claims of being able to. The only positive aspect was that they were easy to install. However this small perk is overshadowed by their flimsy and ineffective performance. Save your money on these drill bits and invest in a higher quality product..