small shaft bearings:1,ABEC-3,5;Z2V2,Z3V3 2,High speed 3,End cover:ZZ,RS 4,Noise level:Z1, ... ,C0,C3... Lily bearing is a specialized manufacturer of small shaft bearings.Features:1),Shield / closure: Open,Teflon Sealed,Rubber Seals ... Bearings Thrust Ball Bearings Hybrid Ceramic Bearings Hybrid Ceramic Bearings High Performance small shaft bearings