Crafted with precision using premium steel races, high-grade balls, and an exceptional surface finish, these bearings deliver unrivaled speed and reliability. Experience unparalleled performance with these superior quality bearings. Contents: Set of 8 bearings Instructions Sticker Storage Keep your bearings dirt-free, moisture free, and lubricated. Water will rust your bearings and dirt will destroy the smoothness of the super finish on your bearing races, increasing friction.