Features: Upgrades for Ender3S1/S1PRO with high performances printer nozzle featuring two metal throat tube for enhances thermal stability and aluminum heating block for rapid, uniform heat distribution. Engineered with copper plated throat components for superior thermal conductivity and precisions machined sealed interfaces to minimize filament leakage during extended printing. for enthusiasts and professional makers seeking compatible upgrades to optimize for printers for complex projects. Perfect for home workshops or professional setups requiring consistent PLAs, ABS, or PETG extrusion across detailed prototypes, functional parts, and artistic creation. Achieve flawlessly layer adhesion and reduced clogs with its alloy based construction, to prolonged high temperature operations while maintaining dimensional accuracy. Specifications: Materials: Alloy Styles: Stainless Steel, Alloy(optional) for Ender3S1/S1PRO Package Includes: 1Set Printer Nozzle note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.