8 Skateboard Bearings 608ZZ Black Color 2 Metal Shields Set of 8 skateboard bearings, bearings are 8 Deep Groove Radial Ball Bearings,skateboard bearings are closed with Metal Shields,skateboard bearings are made of Chrome Steel,each skateboard bearings has 2 Metal Shields to protect the rolling elements from dust or any possible contamination,also our skateboard bearings are pre-lubricated with oil, our skateboard Bearings set are packed 8 bearings.