Most mid-priced bicycles use cast aluminum cranks. Casting is a cheaper technology but because it is less reliable, cranks need to be over-built and are heavy and chunky. Our cold-forged cranks are lighter and have beautiful flowing lines. Cold forged 6061 aluminum, Single Plastic chain guard Fitted. Genuine Spare Part for Tern, 170 mm crank length, also can be used as an upgrade for  Dahon Vitesse D8 and any of the more basic models from Tern or Dahons like Speed/Vitesse D7's etc.  Also suits as an upgrade for Dawes Kingpin, Dawes Jack and many other Dahon licensed technology bikes.   CHAINSET SUPPLIED IS ALL Black and with securing Allen bolts