28936 12 bb products are offered for sale by suppliers on Alibaba.com, of which kids' bike accounts for 1%, ride-on cars accounts for 1%, and baby strollers accounts for 1%.
A wide variety of 12 bb options are available to you, such as steel, aluminum alloy and magnesium alloy.You can also choose from v brake, disc brake 12 bb,as well as from single speed 12 bbAnd whether 12 bb is ordinary pedal, {2}, or {3}.