Tire:PVC
Hub:ABS
Axle:304 Stainless Steel
Big Wheel
Tire's width : 6.5mm
Axle diameter: 0.79-0.8mm
Axis length:28.52mm±0.03
Tire's outer diameter: 12.80mm
Wheel track:18.58mm-18.65mm
Distance between 2 outer of wheels: 33.35mm±0.05
Small Wheel
Tire's width : 5.35mm
Axle diameter: 0.79-0.8mm
Axis length:27.10mm±0.03
Tire's outer diameter: 10.80mm
Wheel track:18.28mm-18.39mm
Distance between 2 outer of wheels: 31.10mm±0.05
Dimensions common in BSA series All color tires can be removed