609ZZ Shielded Ball Bearing 9mm x 24mm x 7mm 609ZZ Shielded Ball Bearing, bearing is made of Chrome steel, 609ZZ has Electric motor quality, each 609ZZ bearings is closed with 2 Metal Shields, one Shield from each side to protect the bearing from dust or any possible contamination, also 609ZZ bearing is pre-lubricated with grease, Bearing 609ZZ has industrial packaging.