Feature: The tension adjustment can adjust the tightness of the fishing line according to actual needs. The rubber anti-slip pad is tight and non-slip and does not damage the table . Ball bearing 3.5:1 rotation ratio With 10cm screw, it can be used with single or multi-coil cables Specification: Product name: mountain bike flywheel Material: 7075 aluminum alloy Color: purple, blue, red, colorless Size: 18T Net weight: about 68g Package Content： mountain bike flywheel*1 Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Superior-quality-This accessory parts, made of durable materials, are durable and not easy to wear or damage, ensuring long-term stable cleaning results and long-lasting service life. Easy to Install-The installation is simple, and the accessory is easy to install and replace. Fine Manufacturing-Precise processing and adjustment ensure that each parts are consistent, improving the machine. Well design-user friendly design allow you to quickly install them onto yours, ensuring a secure fit and saving valuable time during maintenance. Excellent After Sales Service-We focus on quality and after-sales service. If you are dissatisfied with our products, please let us know. We promise to give you 400% satisfactory after-sales service. No risk. Don't hesitate. Just buy it.