Each instrument is steriized in individual packets for maximum safety. Unirom, selected DeBeers natural diamonds are electro-bonded to concentric instrument shanks of high quality stainless steel by an advanced technique. Manufacturered to meet stringent ISO international standards with strict quality control by microscope monitoring of every piece. Granulometry (grit size) corresponds to the shape and specific use of each NEODIAMOND instrument. Illustrations are NOT Actual size