The black color Material: aluminum alloy Surface treatment: anodizing Features: mis upgraded from the original version, easy to install, more solid, durable and free to adjust Suitable range: Ender 3 and other 3D printers with 2040 aluminum profile Compatible with Ender 3 and other 3D printers with 2040 aluminum profile. Note: Not suitable for Ender 3 Pro. 2040 Y-axis Synchronous Belt Straightening Tensioner Made of aluminum alloy, anodized surface treatment Easy to install, upgraded from original for free and stronger fitment. Note: Do not install too close, make sure the bed carriage wheels interfere with the adapter used to attach this tensioner. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-61426 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!