16 Inline Skate Bearings works with Roller Hockey Too 2 Metal Shields Set of 16 skateboard bearings, the set has 16 Deep Groove Radial Ball Bearings, skateboard bearings are closed with Metal Shields, skateboard bearings are made of Chrome Steel, each skateboard bearing 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 16 bearings.