Bestselling skate bearing brand in the USA - BONES know interludes the SKATE RATED sticker on most of there packaging to help prove authenticity of the bearings received. If your bearings do not come with this sticker contact bones directly for help. Single, non-contact, removable rubber shield for easy cleaning and less friction; high speed nylon ball retainer for greater strength and speed Re-lubricated with Speed Cream racing lubricant Skate Rated clearances, tolerances, materials, and lubricant Includes set of eight bearings, instructions, and logo sticker