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Description: Dual steel chainwheel,Plastic chaincover Teeth:28/38T CL47.5mm Crank:steel 152mm BB axle:3T(35-52-39)
Description: Triple steel chainwheel,Plastic chaincover Teeth:24/34/42T CL47.5mm Crank:steel with plastic coated,165mm,170mm BB axle:3T(35-52-39)