SG Store 2pcs 3/8" Bicycle Stabiliser Extension Bolt Axle Extenders Suitable Formost Kids Bikes Training Wheels From 12" 20" Wheel

Product size: The thread of this product is 3/8 inch, which is about 9.5mm, Manual measurements, please allow slight errors. Applicability: This product is suitable for most children's bicycles with 12-inch to 20-inch wheels Product function: These extension bolts allow you to keep the gears on the bicycle and install stabilizers Safety: By removing the standard wheel nut on the gear side of the bicycle, you can install the extension bolt. This will extend the length of the shaft beyond the gear transmission so that the stabilizer will not malfunction Because the axle sizes of children's bicycles are different. Please make sure that the size of the axle is suitable for the axle they will use.