Super Coarse Diamonds | Black Ring

Super coarse diamonds — black ring — for maximum-speed bulk reduction, gross removal, and rapid trimming where surface finish is a later step. Every diamond in this collection carries its grit and ring color directly in the product title, matched to ISO grit code 54x.

When chairtime matters most — initial crown reduction, cutting down old restorations — the black ring removes structure fastest. Follow with finer grits for the finish.

FAQ

What does the black ring indicate? Super coarse grit under the standardized diamond color-coding system — see the color guide linked below for the full ladder.

When should I use super coarse? For the first, bulk-removal stage only; always step down through coarse and fine grits before finishing.

Where are these diamonds made? Every instrument in this collection is manufactured by Busch & Co. in Engelskirchen, Germany — an ISO 13485-certified specialist in rotary precision instruments since 1905 — and ships fast from our US warehouse.

Reference resources: Bur Comparison Chart · Speed Chart · Color Coding & ISO Guide · Glossary

Further reading: Busch Bur Ring Colors Explained: How to Read Grit, Blade Count, and the Gold COO