Dahon crank set. Aluminium cranks and steel chainring. Square taper fitting. Can be used on some Dahon Hub Gear models like the Vitesse D3HG, and Briza, also suits early Ciao that originally had the Kinetix Wing chainset and later 5 speed Ciao's. 170mm Crank 38T It does not have a built in guard, as it's designed for models with a full chainguard Colour SILVER