Standard ferrite magnetLightweight and adjustable powerGenerates 425 watt power at 40 km/h0.6 kgs dual steel disc flywheelFits hub width between 125 â 145mmSturdy 29mm folding legs3 levels of resistanceMagnetic24` - 700C x 453 levelsBlackUPC/EAN/GTIN: 4944924406783