ADJUSTABLE: There are some holes on two sides of the training wheel arm, you can adjust to different holes to fit your bike size.
SUITABLE BICYCLE SIZE: These bike training wheels are suitable for children multi-speed bicycles from 18 to 22 inches.
MATERIAL: Premium steel and anti-shedding rubber tire. Strong and sturdy, offering more security and stability for beginners.
EASY TO INSTALL: Comes with fittings, all mounting hardware and installation instructions is included.The support brackets are individually adjustable.