This is a Shimano 105 Series FC-5800L outer 11-Speed MidCompact Chainring with 53 Tooth count and 110mm bolt diameter in black finish. For 53/39 chain ring combinations.
Bolt Pattern: 4-Bolt Asymetrical
Chainring BCD: 110mm
Chain Compatibility: 11-speed/double
This product is expected to become available for purchase on Monday, August 23, 2021