Road Folding Bicycle Crankset 10/11/12s Single Chainring 40/42/44/46/48T with BB

Gear ratio: 40T（95g）42T（100g）44T（107g）46T（110g）48T（115g）. Features: High performance power transmission light weight dental disc. K factor: 91.5mm. Q factor: 148mm. Bottom support: BSA (68-73mm) BB86 (86mm) about 100g.

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