• GREAT PERFORMANCE AND DURABILITY from the 7-ball bearing design.
• LESS FRICTION AND INCREASED SPEED are two of the main benefits from the silicone/grease mixture for smoother, faster rolls.
• METAL SHIELDS PREVENT CONTAMINATES from entering the bearings for consistent performance and spin.

SG5 Bearings. SG stands for silicone grease. The higher the SG rating the faster and smoother the bearing will spin. The silicone grease protects bearings from the elements and allows the wheels to spin properly while keeping them well lubed. Includes 16 bearings.