Set of 2 Racing Quality Go Kart 30mm x 62mm Bearing C3 w/ High Speed PS2 Grease Bearing Details: 2 x SB206ZZ-Kart axle bearings ID: (mm): 30mm OD: (mm): 62mm Each bearing has free spinning ZZ non-contact shields and high speed PS2 grease PS2 high precision grease has high grade synthetic oil as a base, as well as thinners and special additives It is excellent wear and corrosion resistant with service life characteristics This product is suitable for high-speed, low temperature machinery use Perfect for racing! All parts need to be fitted by a licensed Technician Premium bearings made from premium alloy steel to provide superior fatigue life and reliability Precise heat treatment, dimensions and surface finish contributes to reliable bearing performance Each component undergoes ACCOR's rigorous testing to ensure quality standards