This is shorter by 6cm than the Dahon Deluxe seatpost and therefore is a budget replacement for persons who do not need the length of the standard post (33.9mm x 520mm) Fits most 20” wheel Dahons. It is not micro adjust, so we supply a standard twin rail clamp with the seatpost. It's not easy to generalise but we estimate a maximum rider height of 5' 6" - 5' 9" It's steel and therefore heavier than original fitment on Dahon or Tern bikes and is designed as a cheap option for people of appropriate height. Supplied in Black only.