6016ZZ Shielded Ball Bearing 80mm x 125mm x 22mm One Ball Bearing 6016ZZ Shielded Ball Bearing, bearing is Chrome steel, 6016ZZ has Electric motor quality, each 6016ZZ bearings is closed with 2 Metal Shields, one Shield from each side, to protect the bearing from dust or any possible contamination, also 6016ZZ bearing is pre-lubricated with grease.