With a wear resistance that is orders of magnitude higher than any other E3D nozzle, ObXidian is really hard. Several orders of magnitude harder than Nozzle X and indeed any other generic hardened steel nozzle. This is achieved by pairing a tool steel insert with the new E3DLC coating. This specially formulated coating also embeds non-stick properties into the Nozzle itself resulting in considerably less plastic build up around the Nozzle. Revo ObXidian High Flow increases your setup's volumetric flow rate, enabling you to print abrasive materials faster!