bicycle bearings:1,ABEC-3,5;Z2V2,Z3V3 2,High speed ... ,C2,C0,C3... Lily bearing is a specialized manufacturer of bicycle bearings. Features:1),Shield / closure: Open,Teflon Sealed,Rubber Seals ... to 80mm8),Outside Diameter:from 15mm to 100mm Currently, our miniature bearings contains the following types, Metal Shield Bearings Open Bearings ...