Slime Balls – Friends Of Planet 9 Light Ups 66mm 78a Wheels | GITD

LED lights that light up when you roll, powered by the rotation of the wheel and bearing. No batteries required, and come with bearings

• Diameter: 66mm / Width: 47mm / Road Surface: 37mm
• Glow-in-the-dark urethane
• Symmetrical shape with rounded edges
• Center set reinforced bearing core
• Sold as set of 4