Bones Swiss Skate Bearings Legendary Original Bones® Swiss Bearings are the optimum combination of Bones Skate Rated™ design and Swiss precision manufacturing creating the standard by which all other bearings are measured. For more than 34 years preferred by the world's top professional skaters. Proven, professional competition-grade speed and durability make Bones Swiss normally last several times as long as ordinary ABEC rated bearings. Features: - 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. Contents: - Set of 8 bearings- 4 bearing spacers- Instructions- Sticker