Dual Gear Extruder Aluminium Block Kit — Upgrade for CR10S Pro, Ender 3 Pro, Ender 5 Key benefits - Strong, consistent filament feed: Dual-gear extrusion provides higher extrusion force and improved filament grip to reduce slipping and under-extrusion. - More stable prints: The robust gear-driven design keeps filament movement steady under varying print speeds and extrusion demands. - Durable, lightweight construction: Machined aluminium-alloy body resists wear, lowers weight compared with all-steel parts, and helps dissipate heat for more reliable long-term performance. Compatibility - Designed for use with CR10S Pro, Ender 3 Pro, and Ender 5 3D printer models. Check mounting points and connections on your machine before installation. Material and performance - Aluminium alloy extruder body: light, wear-resistant, and better at heat dissipation than many plastic alternatives. - Dual-gear drive: increases gripping surface and pinch strength for improved handling of standard and flexible filaments. What’s included - Extruder body (aluminium alloy) - Spring - Mounting screws - Connector/plug and necessary small hardware - Note: kit requires self-assembly and minor adjustments during installation. Installation notes - This kit is intended for DIY assembly. Basic tools and mechanical familiarity with 3D printer extruders are required. - After installation you must change the extruder steps from 100 to 140 to match the dual-gear gearing and ensure correct extrusion calibration. Typical applications / use scenarios - Upgrading an Ender 3 Pro for better handling of flexible filaments (TPU) where stronger, more positive filament drive reduces slipping. - Improving extrusion stability on a CR10S Pro when printing larger or longer prints that demand consistent filament feed. - Custom DIY printer builds or retrofits on Ender 5 where a lightweight, durable aluminium extruder block is preferred over stock plastic units. Additional notes - The kit preserves the original functions of your printer while providing a more robust extrusion mechanism. Verify compatibility and follow calibration steps (including the 100→140 extruder steps change) to achieve optimal results.