NeoBurrĀ® FG OS1 Egg / Occlusal Shaper Finishing Carbide Bur by Microcopy (USA). Engineered from a single piece of solid tungsten carbide with an elongated 2.3 mm egg contour and precision 12-flute configuration designed for restorative occlusal anatomy sculpting, posterior cusp contouring, and aesthetic composite margin refinement.