Features: Achieve precise and high-quality 3D printing with this hardened steel nozzles heads. Made of durable hardened steel, these nozzles are built- to withstand wear and tear for long-lasting performances. Designed for 3D printing enthusiasts and professionals who demand the best in print quality and durability. Perfect for home workshops and professional printing labs. Screw-on makes the connection more stable and convenient for fixation and replacement; Specifications: Material:Hardened Steel Includes 0.2/0.3/0.4/0.5/0.6/0.8/1.0mm Nozzles Length:Approx.13mm/0.51in Package Includes: 4x0.2mm Nozzles 4x0.3mm Nozzles 4x0.4mm Nozzles 4x0.5mm Nozzles 4x0.6mm Nozzles 4x0.8mm Nozzles 4x1.0mm Nozzles note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.