Shimano SM-AD91 28.6mm/31.8mm Clamp On - Braze On Adapter
For installing SHIMANO braze-on front derailleurs to frames requiring a band clamp, the DURA-ACE SM-AD91 is available in 28.6/31.8mm sizes.
For installing SHIMANO braze-on front derailleurs to frames requiring a band clamp, the DURA-ACE SM-AD91 is available in 28.6/31.8mm sizes.