miniature ball bearing Features:1,ABEC-3,5;Z2V2,Z3V3 2,High speed ... :Z1,Z2 5,C2,C0,C3... Lily bearing is a specialized manufacturer of miniature ball bearing. Features:1),Shield / closure: Open,Teflon ... ,C2, C3, C4, C55),Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic6),Retainer: PTFE, Nylon, PEEK Or Stainless Steel7),Bore Size:from 1mm ...