Dahon crank set. Aluminium cranks and steel chainring. Square taper fitting. Can be used on some Dahon Hub Gear models like the Vitesse D7HG 170mm Crank 44T It will not fit within the full ghainguards of many Dahon bikes as most models require a maximum of 40 or 42T. Could be used on Derailleur gear models for those of you wishing to reduce the standard gearing. It does not have a built in guard. Colour Black.