Trek MT220 24" Kids Bike Wheel Set 7S Freewheel Recumbent 135/100mm Matrix 550:)
Size: From a trek MT220 kids bike, 24" rims, bolt on, 135/100 spacing, matrix 550 7 speed freewheel. We have given away over 13,000 bikes, diverted 1000 tons from the landfill, and taught repair skills to over 7000 people.