Description: 【Material】: The gear component is made from hardened steel and high strength copper material, ensuring durability and longevity. 【Advanced Features】: With an HV value of 1000-1200 and an HRC value of 62-65, this gear component offers hardness and resistance to wear and tear. 【Nano Coating Surface Treatment】: The nano coating surface treatment enhances the gear's resistance to wear, making it ideal for long term use in various environments. 【Compact Size and Lightweight】: 2.7cmx3.45mm/1.06inchx0.14inch, this gear component is compact and lightweight, making it easy to handle and install. 【Fitment】: Extruder gear is designed for Neptune 4, ensuring great compatibility and seamless operation. Specification: Packing size: 8cmx6cmx1cm/3.15inchx2.36inchx0.39inch Material: Hardened Steel and Copper Color: Black 2.7cmx3.45mm/1.06inchx0.14inch Package Includes: 1 Extruder Gear Note: Please allow slightly errors due to manual measurement and different monitors.