Features Broad Printer Compatibility - This upgrade kit is designed for a vast array of DIY 3D printers, including the En-der 3 Pro, C-R10, and more, ensuring seamless integration and expansive usability. Enhanced Precision - Featuring CNC hardened steel internals, this extruder guarantees high accuracy and superior performance, providing smooth filament delivery for 3D printing projects. Flexible Material Usage - With its ability to handle 1.75mm filaments, this kit offers compatibility with various printing materials, enhancing your 3D printer's versatility. Superior Extrusion Control - Equipped with a 3:1 gear ratio and a dual-drive mechanism, the extruder ensures stable, no slip filament feeding and powerful extrusion capabilities. Adjustable Tension - The integrated adjustable spring device lets users fine-tune the grip on the filament, optimizing the extruder for a wide range of materials and ensuring consistent printing quality. Feature: 1. TRANSPARENT DESIGN: The transparent material allows users to better observe the extrusion process, ensuring smoothly operation and identifying any potential issues, especially with flexible materials like TPU. Specification: Item Type: Dual Drive Gear Extruder Material: Metal, High Density Engineering Plastic Package List:1 x Extruder  1 x Extrusion Wheel  1 x Electric Frame 1 x Pneumatic Quick Hose Fitting  2 x Hex Wrench  3 x M3 x 35 Screws  1 x Tighten Adjustment Screws 1 x 2 x 4 x 100mm PTFE Tube1 x Spring  1 x Washer1 x Hook1 x Manual  Package List 1 x Extruder 1 x Extrusion Wheel 1 x Electric Frame 1 x Pneumatic Quick Hose Fitting 2 x Hex Wrench 3 x M3 x 35 Screws 1 x Tighten Adjustment Screws 1 x 2 x 4 x 100mm PTFE Tube 1 x Spring 1 x Washer 1 x Hook 1 x Manual