Ultegra ST-6510 STI Mounting/fastener rings
#4
I believe Quality Bike Products carry them. There are a number of on-line dealers that carry QBP products, Harris Cyclery is just one of them.
https://harriscyclery.net/page.cfm?Pa...d=17016&type=T
https://harriscyclery.net/page.cfm?Pa...d=17016&type=T




