■ The double ball race is heat-treated to increase the hardness and smooth of finish, With hard track and good lubrication. The pedal of brake is also heat-treated to be used longer.
■ Zinc-plating fork, anti-corrosive
■ The double ball race is heat-treated to increase the hardness and smooth of finish, With hard track and good lubrication. The pedal of brake is also heat-treated to be used longer.
■ Zinc-plating fork, anti-corrosive