Model Number:Hardened Steel Nozzle 0.4mm 3D Printer MK8 NozzlesItem Type:Nozzle Origin:Mainland China Features: Durable material: MK8 extruder nozzles are made of hardened tool steel, good abrasion resistance, heat resistance and corrosion resistance, sturdy construction makes them durable to serve you for long time, suitable for 3D printing at high temperature Good performance: this hardened tool steel nozzle has higher toughness and hardness, not only suitable for common 1.75mm 3D printer filaments, but also can print filaments of carbon fiber, fiberglass, etc. High precision: the inner wall of the MK8 nozzles is smooth and has no burrs, the viscosity coefficient is small, extruder nozzle diameter error less than 0.02 mm, provide you a accurate and smooth extrusion Compatibility: these 3D printer nozzles compatible with MK8 hotend for Creality 3D printers, such as Ender-2/ Ender-3/ Ender-3 pro/ Ender-5, also compatible with Creality CR-10 all-metal hotend, Prusa i3, Anet A8, Reprap, etc. Specification: Nozzle caliber: 0.4 mm/0.5mm Filament diameter: 1.75mm Material: Hardened tool steel Package included: 5 x 0.4mm Hardened steel 3D printer nozzle 1. Key away from Fire 2. Due to includeing small parts, please keep away from Children under Three. 3. Please leave 5 star feedback if you're satisfied with our products and service, we will appreciate it 4. If the products you received was damaged or any more question, please feel free to contact us.