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- Bolt Pattern: 5-BoltChain Compatibility: Shim/SRAM 10Chainring BCD: 130mmChainring BCD: 130mmChainring Speeds: 2x10spChainrings Material: AluminumComponent Color: SilverMax Teeth: 39tPosition: InnerTooth: 39t(B)
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Stock for Dura-Ace 7800/7803 double and triple cranksets. Nickel plated duraluminum: 10-speed SIS compatible. For best shifting performance, match A-type, B-type, or E-type chainrings. Features: Rings are designed to be used only as a set42/54, 42/55, or 44/56. 45t ring is an optionto be used with the 56t ring. Any other combinations may result inpoor shifting