1. Full-Chrome Steel Bearings with Steel Ball Retainer for Greater Strength.
2. High Precision and High Speed Bearings,Used with Skateboards, Longboards, Inline Skates, Rollerblades, Electric Skateboard,Roller Skate,Stunt Scooter and so on.
3. Pre-lubricated with Ultra-Fast Speed Cream racing lubricant,Ultra-Fast Lube for Guaranteed High Speeds and minimal friction.
4. Double Side , non-contact, removable rubber shield protection from dirt, rocks, dust, to lengthen the life of the bearing and maintain precision,easy cleaning and less friction;
5. Includes set of eight bearings.