Aluminum cups w/ steel hardware. Converts a non-threaded 68mm American BB shell to an English threaded Euro BB TECH SPECSWidth68mm BB InterfaceAmericanSpindle TypeEuro Length Cup MaterialAlloy Sil Weight104g Cup Type Cup OD/Bearing OD Color
Aluminum cups w/ steel hardware. Converts a non-threaded 68mm American BB shell to an English threaded Euro BB
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