* Bones Swiss Skate Bearings * Single, removable, non-contact rubber shield allows easy cleaning and low friction. * High speed nylon ball retainer provides added strength and speed. * Pre-lubricated with Speed Cream & racing lubricant * Skate Rated; clearances, tolerances, materials and lubricant provide the best performance and durability possible. * Best selling high end skate bearing in the U.S.A.   Legendary Original Bones Swiss Bearings are the optimum combination of Bones Skate design and Swiss precision manufacturing making them the best skate bearings brand on earth. For over 34 years preferred by the world's top professional skaters. Unmatched speed and durability make Bones Swiss normally last several times as long as ordinary ABEC rated bearings. you'd be surprised as to how many of your favourite pro's ride Bones Swiss, even if they are sponsored by another bearings brand.