Carbon-Ti X-Carbonrings 39x110 (4 ARMS)

Chainring in aluminium alloy AL7075-T6, 3K glossy structural carbon fiber with Titanium Grade 5 pins.
Inner gear with 39 teeth and BCD 110mm 4 arms.
Compatible with Shimano Dura Ace FC-9100 and 9000, Ultegra FC-8000 and FC-6800 or SRM Origin cranksets and Shimano 11-12 speed and SRAM 11 speed chains and groups.
It must be coupled with its outer X-CarboRing EVO 53 x 110 (4 arms) chainring.
100% made in Italy.