Set of 10 Shielded 1.5 x 4 x 2 Ball Bearings 10 Ball Bearings Set of 10 Shielded 1.5 x 4 x 2 Ball Bearings, Bearings are made of Chrome Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube.