Wide Compatibility: This high flow, high speed hardened steel nozzle is compatible for A1 Mini 3D Printer Hotend. You will receive including 3 pieces 0.4mm, 1 x 0.2mm, 1 x 0.6mm, 1 x 0.8mm high flow hardened steel nozzles. Compatible for -Us B0ctx5l13w, B0cxt2l4sw, B0cxt1l8w5, B0cxt43dfm Newly developed and upgraded Bambu Hot End compatible. High Speed Printing: High flow nozzle, filament flow is twice as much as conventional nozzles, achieving high speed and accurate printing. Please note: This nozzle is only compatible with the newly developed for Bambu Hotend nozzle, not-original nozzle. Before removing the pre-installed nozzle, you must heat the nozzle first, and make sure to tighten the Cht nozzle during installation to avoid air leakage. Colour:Black Material:Hardened Steel Package Contents: 6 * 3D Printer Nozzles Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.