Print Carbon Fiber, Glass Fiber, and Abrasive Filaments Without Wear The Bambu Lab Hardened Steel Nozzle is the essential upgrade for printing abrasive filaments. Pre-installed on the X1 Carbon, H2D, and X1E — now available as a standalone replacement for A1, A1 Mini, P1S, P2S, and H2 series printers. Material: Hardened steel — superior abrasion resistance vs. standard stainless steel Recommended for: PLA-CF, PETG-CF, PAHT-CF, Glow-in-the-Dark PLA, and all fiber-reinforced filaments Quick Swap: One-click hotend separation on H2/P2S series for fast nozzle changes Includes: Complete hotend assembly with nozzle pre-installed Tip: Use 0.4mm for standard prints; 0.6mm recommended for carbon fiber and glass fiber to minimize clog risk Select your nozzle size and printer series compatibility from the options below.