SERIES:SHIMANO ALIVIO M3100 Series. Shifter type:RAPIDFIRE PLUS. - 1pcsSL-M3100 Left Shifter+1pcs SL-M3100 Right Shifter 2x9 Speed. - 1pcsSL-M3100 Left Shifter+1pcs SL-M3100 Right Shifter 3x9 Speed. - 1pcsSL-M3100 Left Shifter 2 speed only.
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