NeoBurrĀ® RA 8SL Surgical Length Round Carbide Bur by Microcopy (USA). Engineered from a single piece of solid tungsten carbide with an extended surgical length right-angle latch shank (RA SL) and a wide 2.3 mm round cutting head. Specifically designed for low-speed surgical contra-angle handpieces, safe bulk bone reduction, deep osseous guttering, unroofing extensive pulp chambers, and excavating deep carious dentin near vital pulp without the risk of air-induced surgical emphysema.