The string is a technical product identifier. While exact specifications can vary by catalog year, it generally breaks down as follows:
: It is used to "dress" or restore the cutting ability of standard grinding wheels that have become clogged or dull. NANIWA DUP 09 CCD E- - 18
: Ensuring a grinding wheel is perfectly concentric and flat to maintain the tight tolerances required in aerospace or automotive parts manufacturing. The string is a technical product identifier
: If the bonding agent isn't high-quality, the diamonds will "shed" before they are fully used. Naniwa Abrasive Mfg
: The brand, Naniwa Abrasive Mfg, a Japanese leader in abrasive technology.