Shimano Dura-Ace 7900 10-Speed Chainrings
- B-Type, for use with 52 or 53 tooth B-type outer chainrings
- Designed for use with 10-Speed asymmetrical Shimano road chains: CN-7901, CN-6711 and CN-5701
- Color: Silver/Black
- Material: Aluminum
- Tooth Count: 39
- Ring Position/Type: Inner
- Drivetrain Speeds: 10
- Defined Color: Silver
- Chainring BCD: 130