The Shimano SM AD 79 derailleur clamp for 31.8 mm seat tubes and the DURA-ACE Di2 solder-on derailleur.
The Shimano SM AD 79 derailleur hanger for 31.8 mm seat tubes and the Dura Ace Di2 brazed-on derailleur.
Compatible only with the Shimano Dura Ace Di2 front derailleur.
Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com
