Used to assemble on the rear wheel, compatible with BR-C727S toddler bike.

Used to assemble on the rear wheel frame, compatible with BR-C727S toddler bike.

The frame buckle secures the rear wheel frame to ensure riding safety, is compatible with BR-C727S toddler bike.

The rear wheel frame is used to attach the rear wheel, but the rear wheel is not included in this component, compatible with BR-C727S toddler bike.