Super Durable Material: The extruder nozzle is made of hardened steel material, which has higher hardness and precision than ordinary brass extruder nozzles, better heat resistance, longer service life, and compatible with more consumablesHigh Precision: Hardened steel nozzle has higher toughness and hardness,not easy clog during printing, easy to clean,create more perfect printer item than normal metal nozzleCompatibility and Applicability: These hardened steel nozzles fit for 3D Printer Makerbot Creality Ender 3 series and CR-10 series 3D printer, MK8 Makerbot Reprap Prusa I3, compatible with all 1.75mm PLA ABS 3D printerColour:Gray blackMaterial:Hardened steelPackage Contents:5 * nozzle5 * Cleaning needle1 * wrenchOnly the above package content, other products are not included.Note: Light shooting 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.