Features: Upgraded and transform the short distance extruder to extrude filaments and shrink more accurately and with high accuracy; Increase pulleys to reduce wear and improve stability; For more filaments: such asTPU flexible filaments, it is more convenient to replace filaments; Aluminum alloy material, durable, long service life, convenient replacement, and increased heat dissipation holes; Short distance/long distance extrusion can be switched at any time, making disassembly convenient Specifications: Material: Aluminum Alloy Surface Treatment: Anodizing Suitable for: 3D printers such as CR10 Ender3, Ender3 Pro,Cr10 etc Package Includes: 1Set Plate and Extruder Kit for Ender3 Cr10 note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Without Motor