This International Standard specifies the dimensions and tolerantes to ensure secure assembly between the stem and the handlebar bend of a bicycle. lt applies to bicycles intended for use on public roads, and on which the saddle tan be adjusted to provide a saddle height of 635 mm or more. lt does not apply to specialized types of bicycle such as tradesmen’s delivery bicycles, tandems, toy bicycles and bicycles designed and equipped for use in sanctioned competitive events.