the high quality and best price we are the direct factory of freewheel and welcome to visit ! And we have 16teeth,18t ,20t ,22t ,and also we can make them as you request !Freewheel (single freewheel)Size :1/2*1/8*16T/18T/20T/22T/24TFinish:black ,brown ,cpMaterail:steelInner packing:1pcs/ploybag/color boxOuter packing :100pcs/ctnCompetitive in quality and perfect service after sales