915 Generation 4PCS Children's Bike Auxiliary Wheel 14/16/18/20/24 Inch Str

Product name: Bicycle auxiliary wheel wheels
Application: all kinds of children's bicycle auxiliary wheels
EASY TO INSTALL - bikes training wheels are easy to install. No wrestling or confusing directions. Model: ST-130
Wheel diameter: 130mm
Wheel thickness: 19mm
Shaft diameter: 9.5mm
Shaft length: 25mm
Colour:Black+white
Material:Polystyrene+PVC Package Contents:
4 * Bicycle auxiliary wheels Only the above package content, other are not included.
Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.