Carbide RRX AC Blue Cone mini (⌀ 4.0/8.0)designed with extremely high durability, easy cleaning, a longer live service and reduced heat development. RRX is a special surface with two types of staggered toothing and a right-wound transversal cut usable on all metals, resin and composites.                                                         
AC-100-B-014-040 (⌀ 4.0/8.0)
Each bur comes in a set of 5.