single row deep groove ball bearing 6204 :1,ABEC-3,5;Z2V2,Z3V3 2,High speed 3,End cover:ZZ,RS 4,Noise level ... :Z1,Z2 Lily bearing is a specialized manufacturer of single row ... deep groove ball bearing 6204 . Features:1),Shield / closure: Open,Teflon Sealed,Rubber Seals,2 Metal Shield 2),Tolerance codes ...