NTI supplies more than 400 different diamond instruments with up to six different grit sizes. The comprehensive range provides for any shape of specific preparation. NTI Diamonds combine a comprehensive selection, strict adherence to ISO certification standards and superior Unimatrix Bonding Technology. The Unimatrix Bonding process minimizes clogging due to a uniform position of diamonds, providing more exposed diamond surfaces on the tips and edges for superior overall cutting ability. Sold in packs of 10.