40 mm sealed bearings:1,ABEC-3,5;Z2V2,Z3V3 2, ... level:Z1,Z2 Lily bearing is a specialized manufacturer of 40 mm sealed bearings. Features:1),Shield / closure: Open,Teflon Sealed ... Size:from 1mm to 10mm8),Outside Diameter:from 3mm to 30mm Currently, our miniature bearings contains the following types, Metal Shield ...