BBB BCR-31 Compact 52T ¦ 5-arm.
¦ 34T / 36T / 38T / 39T / 42T / 46T / 48T / 50T / 52T / 53T.
¦ Designed for compact cranksets.
¦ Shimano up to 2009/SRAM- 9/10 speed compatible.
¦ 7075 T6 aluminum.
¦ 110 BCD.
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