The Conquer Indoor Bike Trainer is perfect for riding inside. This cycling trainer uses opposing magnets to create resistance and help you maintain a smooth, efficient pedal stroke. Conquer your fitness and cycling goals. Key Features: Simple to assemble, no tools are necessaryMade from durable hi-ten steelExtra wide frame provides maximum stabilityEasy to fold for storageCompatible with 26 in., 27 in. and 700c bike that have a quick release rear wheelRear wheel skewer is included (swap with quick release skewer on bike for trainer use)Skewer measures 7.5" long. If your bike's skewer is any longer, or if your bike has more than 10 gears on the rear cassette, this skewer (and the trainer) may not work for you.Included is a front wheel riser block which helps level the bike and keeps its front wheel stable