【Easy Installation】608RS bearings and spacers pre-installed for a smooth ride
【Moderate Hardness & Lights Up】83A Durometer, Comfortable for riding, No need for batteries, Illuminates with magnetic core, Flashing in the dark for a cool look, Adds more fun for kids
【Wide Range of Uses】Includes 4 pieces (2 front, 2 rear) for 3-wheeled kid push scooters