Real High Flow: Save Up to 30% of Your Time The Bambu High Flow Nozzle's optimized melt zone enables significantly increased volumetric speed, achieving up to 62.5% higher max volumetric speed and reducing print time by up to 30% with ease. The larger your model, the more time you save—especially for prints with extensive infills. High-Speed Precision: Sharp Details Every Time Say goodbye to under-extrusion, rough surfaces, and loss of detail. Unlike standard high-flow nozzles, Bambu's high yet consistent extrusion ensures crisp edges, flawless texturing, and ultra-smooth surfaces—every single time. Please Note: Filaments with carbon fiber, glass fiber, metal, or other inorganic particles are prone to clog a 0.2 mm nozzle. For filaments containing carbon fiber or glass fiber, it is highly recommended to use a hardened steel 0.6 mm nozzle to minimize the risk of clogging and abrasion. Bambu PLA-CF and Bambu PETG-CF have been extensively tested and proven to have a low risk of clogging when printed with a hardened steel 0.4 mm nozzle, while also achieving higher print quality. In the Box High Flow Hotend with hardened steel nozzle *1 Product Specifications Max Printing Temp: 350 ℃ Length: 49.2 mm Compatibility: H2D, H2D Pro, H2S and P2S Manufacturer Number (.4mm Hardened Steel): FAH063 (NEW), FAH030 (OLD) Manufacturer Number (.6mm Hardened Steel): FAH064 (NEW) ,FAH031 (OLD) Manufacturer Number (.8mm Hardened Steel): FAH065 (NEW), FAH032 (OLD)