soozier bike trainer magnetic bicycle stand indoor exerciser w quick release skewer 5 levels resistance silverRegardless of the weather outside, you can stay in shape in the comfort of your own home by turning bike into stationary! Stationary bike trainer stand can hook up to just about any bike including road and mountain bikes with a 26" to 28" or 700CC wheel. Fine tune your wheel and tire size with the micro adjust knob. As you pedal, the internal magnet creates resistance (5 levels of resistance). You can change the resistance levels using your handlebars