This Super Diashine™ disc is 4 inches in diameter, has a velcro backing and uses a 400 mesh diamond.
Super-Diashine brand diamond discs are designed to achieve monument-quality finish on hard-to-finish granite edges. Their design makes them easy to use by both experienced polishers and apprentices. The large center hole brings an ample water supply to the working surface. Reminder: little hand pressure is needed when using any of our discs designed for right angle grinders.