The Bones Swiss Ceramic Skateboard Bearings from Bones Bearings. Bones Swiss 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.

Features:

High speed nylon ball retainer for greater strength and speed.

Skate Rated™ clearances, tolerances, materials and lubricant provide the best performance and durability possible.

1 non-contact, removable rubber shields allow easy cleaning.

Pack of 8 Bearings, enough for one skateboard