Designed for bikes with hollow spindle cranksets. Lift the rear wheel to mount bike on foldable tune-up stand in seconds for washing display storage & maintenance. Aluminum / Engineering grade plastic / Steel construction Max weight 18kg / 39.7lb Comptible with hollow spindle chainsets &40;more than. 20 mm dia&41;61.1x 44x 4.4cm &40; Folded&41;45x 42x 40.5cm &40; Open&41;1.8kg