Lot of 6200ZZ Shielded Ball Bearings, 6200ZZ bearings are made of Chrome Steel, 6200ZZ bearing has 2 metal shields to protect the bearing from dust or any possible contamination, 6200ZZ are self lubricated bearings (bearings are already greased).
6205zz gcr15bearing, deep groove ball bearing, bearing can be rubber seals or steel seals to protect the bearing from dust or any possible contamination.