... ,SHOW,FOLDING,CHILD BIKE Front: 3/8*100*140*36H*14G Rear: 3/8*130*175*36H*14G SpecificationsSTEEL BICYCLE HUB PARTS ... FOR MTB,BMX,SHOW,FOLDING,CHILD BIKE Front: 3/8*100*140 ... performance,color is optional,with competitive price and high qualitysuitable: bicycle hub for MTB,BMX,SHOW,FOLDING,CHILD BIKE Bicycle Hub