• Shimano Dura Ace FC-7800 10-Speed 52T-B SG-X Outer Chainring to fit 130BCD 5-Hole Cranks. New In Bag.
• Mates with 39T-B and 42T-B rings.
• 130bcd, will work with 9/10-spd systems.
• Alloy and made in Japan quality from 2012.
• CR5182.
• FREE shipping in the USA.