soozier indoor bike trainer magnetic bicycle stand with quick release skewer 5 levels resistance blackRegardless 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 700C wheel. Fine tune to 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 handle