RLS9ZZ Shielded Ball Bearing 1-1/8" x 2-1/2" x 5/8"RLS9ZZ Shielded Ball Bearing 1 1 8"x 2 1 2"x 5 8" inch one Bearing RLS9ZZ Shielded Ball Bearing is double shielded, radial and deep groove ball bearing, RLS9ZZ is made from Chrome Steel with chrome steel balls and steel cage, bearing is closed with metal Shields to protect the bearing from dust or any possible contamination, RLS9ZZ bearing is shielded and self lubricated, the quality is set to EMQ (electric motor quality) to ensure high speed, RLS9ZZ