... CP 3.TEETH:24,28,32,36,42,44 bicycle crank We are a big company in China ... : crank,pedal,saddle,tube,cotter pin,hub,freewheel,chain,steel ball,fork,front and rear derailleur,grip,handle ... mudguards,axle,bar end,basket,quick release,reflector,children bicycle,more than one hundred and sixty varieties of products ... them according to the customers' desgin very durable bicycle crank &chain wheel and crank