Flip-Up Training Wheels for 12" - 20" Bicycle Wheels Uenjoy 12 Volt Kids Licensed Mercedes Benz G63 Ride-On Car 2 Seats There is a non-removable 3M-270

There is a non-removable 3M-270 belt sprocket molded on the inboard side of the 85 mm x 47 mm wheel to take the drive belt (sold separately)

Drive Medical Phoenix 4 (S35015)

Drive Medical: 950340079901

In the center of the top piece

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Flip-Up Training Wheels for 12" - 20" Bicycle Wheels Uenjoy 12 Volt Kids Licensed Mercedes Benz G63 Ride-On Car 2 Seats There is a non-removable 3M-270They need them until they don't. These flip up training wheels for 12" 20" bicycle wheels are made by Trail Gator, and are almost instantly "On & Off" (down & up) by turning the knob and flipping them. This allows the adult to adjust the training wheels as needed. Flip wheels up or down Foldable without tool Fits 12" 20" wheels Easy installation These high quality bike accessories will help the young rider gain their skills quickly, just like they did