This unique design features six larger diameter balls instead of the seven balls used in most 608 bearings. The advantage of this design is higher speed, faster acceleration, greater strength and durability. Made in Switzerland. Features: Single, non-contact, removable rubber shield allows for easy cleaning and less friction. High speed nylon ball retainer for greater strength and speed. Pre-lubricated with Speed Cream racing lubricant. Skate Rated clearances, tolerances, materials and lubricant provide the best performance and durability possible. Bones Speed Cream is a high temperature, low viscosity synthetic skate lubricant specially formulated by Bones to reduce friction, and provide a durable micro film of lubricant to protect against corrosion. We have found this lubricant to be superior to Teflon based lubricants in skate environments. Speed Cream R.F. makes your bearings faster and is very long lasting. Contents: Set of 8 bearings, 4 bearing spacers, Instructions, Sticker, Bottle of Bones Speed Cream.