Bike Cranksets Square Crank Arm 4 Claws Cranks For Brompton Folding Bicycle 170
Compatibility: suitable for brompton folding bike. Fit: For Brompton Fnhon 3 Sixty United Trifold Birdy Pikes Folding Bicycle. Support single chainring and double chainring. Material: Aluminum Alloy Smithing machined.