This is the Elite SUITO smart trainer, which uses a direct drive system. I purchased it used a few years ago, but I'm selling it because I no longer have the opportunity to use it. I used it with a bike with disc brakes, but it can also be used with rim brakes. I will include a separately purchased 11-speed sprocket. You can check the following URL for more information: https://torisetsu.biz/products/0000573218/ I will answer any questions I can, so please ask if you have any.