FSA Pro Road 9/10 SPD chainring No one studies the design and manufacturing of each system, and each tooth, as carefully as FSA does. This dedication has helped Full Speed Ahead to become a world leader for high-end chainrings. FSA uses the best materials available to meet or exceed the needs of any drivetrain, and to guarantee the durability, performance, and appearance will out perform, and outlast the competition. These rings are an ideal upgrade for those looking to improve shifting performance or save some weight over their current set up. Features Made of 7075-T6 aluminum these rings are both light weight and strong Ramped and pinned for smooth and precise shifts Five bolt pattern is compatible with Shimano and SRAM cranks Specifications BCD: 110, 130mm Compatibility: 9-10spd Shimano and SRAM Manufacture warranty: 2 years | Fsa | Pro Road 9/10 Spd Chainring | Black | 130Mm, 42 Tooth, 9/10 Spd, Middle