The aide 200 kids bike stabilisers fit all bikes with wheel sizes between 12 20prime they are easy to take on and off using the simple adjustment system you can get these stabilisers just right on your kid39s bike theyrsquoll be free to learn to ride their safely and securely until theyrsquore ready for two wheels aide 200 kids bike stabilisers features fitting instructions included the aide bike stabilisers fit kids bike wheel sizes between 12 20prime can