The Raskullz Balance Buddy LED Training Wheels give kids the confidence to venture out on their own before learning how to ride on 2 wheels! The cool light-up wheels give their bikes added flair. The wheels are made with a durable plastic construction for long life and mount easily on most 12-20 in. bikes. Features: Fits most 12-20 in. bikes Durable plastic light up wheels with strong metal arm brackets and hardware Easy-to-install design Adjustable wheels touch the ground for ultimate stability or raise off the ground to practice balance