625ZZ Shielded Ball Bearings 5mm x 16mm x 5mm 625ZZ Shielded Ball Bearings, one Shield from each side, to protect the bearing from dust or any possible contamination, also 625ZZ bearings are pre-lubricated with grease, 625ZZ has Electric motor quality, each 625ZZ bearing is closed with 2 Metal Shields, Bearing 625ZZ has industrial packaging.