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MTB for 8/7 wheel, 42/32/22 converters, with cover crank length 170 mm recommended BBUN100 axis 4 edges length 123 mm for HG chain type chain link 50 mm
MTB for 8/7 wheel, 42/32/22 converters, with cover crank length 170 mm recommended BBUN100 axis 4 edges length 123 mm for HG chain type chain link 50 mm