[Reliable and Functional]Made of material, this exercise bike magnetic resistance knob is not only reliable but also highly functional, ensuring long-lasting performance.; [Easy Installation]With its simple installation design, you can easily replace old parts with this knob, allowing for a hassle-free setup.; [Perfect for Bike]Specifically designed for exercise bikes, this knob is perfect for enhancing the resistance and intensity of your workout session.; [Multiple Options]Available in 8 gears and 10 gears, you can choose the desired cable length and knob diameter according to your preference and needs.

What's in the box
1 x Bike Trainer Accessories