12 TOOTH FINISHED BORE SPROCKET FOR #50 CHAIN
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FB F/BORE
12T 12TOOTH 12TEETH 12-TOOTH 12-TEETH TEETH
50B12F34 50B-12F-34 50-B12F-34 50-B12-F34 50B-12-F34 50B12F34 50B-12F-3/4 50-B12F-3/4 50-B12-F3/4 50B-12-F3/4