With a wear resistance that is orders of magnitude higher than any other E3D nozzle, ObXidian is really hard. Revo ObXidian High Flow increases your setup's volumetric flow rate, enabling you to print abrasive materials faster!, E3D E3d Nozzle High Flow 3d Drucker Düsen E3D RapidChange Revo Repuesto Impresora 3d Revo Six High Flow 3d Drucker Düsen E3D RapidChange Revo™ ObXidian Boquilla De Acero Endurecido Con Recubrimiento E3DLC Several orders of magnitude harder than Nozzle X and indeed any other generic hardened steel nozzle.