brand new and high quality Features:Made of high-quality aluminum alloy material, corrosion-resistant, high hardness, not easy to break, sturdy and durable, and has a long service life.for Ideal accessory or replacement part to replace the original worn or broken synchronous belt adjuster.Adjustment knob is enlarged and the pulley has teeth, which can tighten the belt better.Suitable for Creality CR10 series, for Ender 3 series, for TEVO series, for ANTE E12, for alfawish U10/U20 and other 3D printers with 2040 profile gantry structure. Specification:Material: aluminum alloyOptional Styles: X, YSize: app.6x5x2.3cm/2.36x1.97x0.91inColor: BlackQuantity: 1pc Note:No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 x Synchronous Belt Adjuster(other accessories demo in the picture is not included.)