This Indoor Exercise Bike Trainer, is a top-notch option for indoor and outdoor cycling exercise. It can accommodate 24-28" MTB and 700C road bikes and features an upgraded model with a 6-speed wire control and magnetic resistance. The trainer is designed for maximum noise-reduction with a heat dissipation fan and is easy to assemble without extra tools. The wire controller allows for 6 different levels of resistance, making it simple to adjust without having to get off the bike. This product offers the best quality and price among other trainers on the market.