Description This fitness equipment ball knob is designed for use with treadmills and exercise bikes. It features a spring-loaded pull pin mechanism that allows secure adjustments. The ball-shaped design provides a comfortable grip, making it easy to adjust your fitness machine settings. Ideal for home gyms, it enhances the functionality and safety of your workout equipment. Features Thread: M16 Rod diameter: 8mm -Color:Multi -Material:ABS -Size:8.50X5.00X5.00cm/3.34X1.97X1.97in -Firm material: made of allowing longlasting use and durability for all your fitness equipment needs -Detachable design: the pull pin knob features a detachable design, making it easy to install and remove, catering to various requirements -Easy installation: simple and straightforward installation process, allowing for quick and simple replacement of old or broken parts -Versatile compatibility: suitable for a wide range of fitness equipment, enhancing your workout experience and equipment functionality -Ball shape: the ballshaped rotating design offers excellent flexibility and ease of use, making adjustments more convenientPackage list: 1 x treadmill rotating pull pin