Bicycle stem, stand pipe, handle pipe english name: Stem
Normally will add a handle bar and all of this group called stem
Usually there are many kinds of materials. In recent years, the high price aluminum alloy handle standpipe, carbon fiber handle standpipe, Professional stem makes the perfect connection between the front fork and the handlebar.
▶Aluminum alloy vertical pipe▶ Carbon fiber pipe▶Black stem for road bikes▶Bicycle standpipe▶For more related instructions, please refer to the link here 維基百科 steam(bicycle part)