Bones Swiss Labyrinth Ceramics are in a class by themselves. If you want the best there is, this is it. The Cerbec Ceramic balls are much lighter, harder, stronger, waterproof, and longer lasting than the finest steel balls.

• Accelerate faster
• Roll faster and farther
• Resist dirt and moisture better
• 2 Labyrinth, non-contact, removable rubber shields allow easy cleaning    
• High speed Nylon ball retainer for greater strength and speed
• Skate Rated clearances, tolerances, materials and lubricant provide the best performance and durability possible.
• Set of 8 bearings
• 4 bearing spacers
• Instructions
• Sticker

You may notice that some skateboard bearings have an ABEC rating that refers to the bearings precision. The rating was developed not for skateboards, but for machines, so many manufacturers don't even bother with the ABEC rating. The ABEC numbers range from 1-9 using odd numbers only. An ideal rating for skateboards is between 3 and 5

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