MINI 4WD 13mm DIA. ROLLER BALL BEARINGS (2PCS.) II

★Ball bearings are a must-have racing upgrade for Mini 4WD machines, facilitating smoother rotation and helping keep speed and stability as the car zooms around the course. ★Steel casings make for long-lasting, durable parts.*Outer diameter: 13mm, Inner diameter: 5mm, Thickness: 3mm.