RLS6ZZ Bearing 3/4" x 1-7/8" x 9/16" ShieldedRLS6ZZ Shielded Ball Bearing 3 4" x 1 7 8" x 9 16" inch RLS6ZZ Shielded Ball Bearing is radial, deep groove ball bearing,RLS6ZZ bearing 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,RLS6ZZ bearing is Shielded and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed,RLS6ZZ bearing is lubricated with