freewheel we can supply many kinds of bicycle freewheels to you freewheelTY-NO-9551>size:16 20 22T 6S 7S2>Steel:iron/steel3>packinga:polythin bag inside4>our company manufacture chainwheel&crank,bb axle,hub spindle,rear carrier etc.also we can supply pedals,saddles,baskets,mud guards.brake,brake shoes,springs,cotter pin etc.