Features: Get the best printing results- with our sturdy extruder support plate, designed to provide reliable support for your 3D printer. Made from high-quality metal and plastic materials, this support plate is built- to last and withstand even the toughest printing jobs. Easy to Install and Use: Easy to install, very convenient. . Accurate size hole position, for extruder back support plate with pulley. High-temperature performance-, oxidation -treatment, high strength, stable sliding. Specifications: Item: 3D Printer Part Extruder Back Plate （Does not include extruder ） Optional Type: Back Plate / Back Plate with pulley Size: approx Mixed Material: Metal Fit- for: Ender3 Ender3 Pro Cr-10 Cr-10S S4 S5 Package Includes: 1PC x Extruder Back Support Plate （Pullley for Optional ） note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2cm error due to manual measurment.