... deep groove bearing: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 metric deep groove bearing. Features:1),Shield / closure: Open,Teflon Sealed ... , AISI440C, AISI304, AISI316, Ceramic 6),Retainer: PTFE, Nylon, PEEK Or Stainless Steel7),Bore Size:from 1mm to 10mm8),Outside Diameter:from ...