NeoDiamondĀ® 1310ZA Z-Class Zirconia Pointed Cone Diamond Bur by Microcopy (USA). Engineered specifically for working with hard ceramic and zirconia restorations, this friction grip (FG) diamond bur allows clinicians to adjust zirconia and open endodontic access with minimal micro-fracturing and consistent depth control, leaving a refined, smooth surface finish.