SRAM offers its Inner Chainring, ideal for both road and 'cross riding, in myriad sizes to humor our impulses and account for whatever a given race throws our way. This ring is stamped from 7075 T6 alloy, a string of numbers and letters that is really just a funny way to spell gear that will last. It gets the SRAMTruVativ machining and coining treatment for precise shifting and the alloy is strain hardened for virtual invincibility. The SRAM Inner Chainring Road is available in 110 or 130 millimeter BCD Bolt Circle Diameter with 34, 36, 38, 39, 42, or 46 teeth. Please note that this ring is only 10 speed compatible.