The following are required to build this product:
BONES Competition quality Skate Bearings are Made in Switzerland. The Bearings are lubricated with Speed Cream that was designed orignally for fast spinning sewing machines & they are the Pro Skaters choice of bearing since 1981.
The BONES ceramic Skate Bearings are engineered for Skating & they are Skate Rated not ABEC rated as the bearing cannot be polished like a regular steel bearing. The bearing houses 2 x Removable non-contact frictionless rubber shields & removable High Speed nylon ball cages.
The Bones Bearings are the international standard by which all skate bearings are measured