miniature ball bearing Features:1,ABEC-3,5;Z2V2,Z3V3 2,High speed 3,End cover:ZZ,RS 4,Noise level:Z1, ... ,C2,C0,C3... Lily bearing is a specialized manufacturer of miniature ball bearing. Features:1),Shield / closure: Open,Teflon Sealed,Rubber ... to 10mm8),Outside Diameter:from 3mm to 30mm Currently, our miniature bearings contains the following types, Metal Shield Bearings Open Bearings ...