Features:brand new and high qualityAccurate size hole position, for extruder back support plate with pulley.High temperature performance, oxidation treatment, high strength, stable sliding.Made of high quality metal and high quality POM, very durable.Suitable for: CR-10S ProEasy to install, very convenient. Specifications:Item: 3D Printer Parts Extruder Back Plate with pulleySize: approx 9.1x7.4x2.65cm/3.58x2.91x1.04inMaterial: MetallFeatures: Adjustable tightnessFit for: CR-10 Max CR-10S Pro 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. Package includes:1x Back Plate with pulley