NeoDiamondĀ® 1122.8 Coarse Round End Taper Diamond Bur by Microcopy (USA). High-performance single-use friction grip (FG) diamond bur featuring a wide round end taper profile (2.2 mm diameter, 8.0 mm head length). Specifically designed for efficient gross reduction during crown and bridge preparations and for establishing smooth, distinct chamfer margins without cross-contamination risk.