small ball bearings imperial:1,ABEC-3,5;Z2V2,Z3V3 2,High speed 3, ... ... Lily bearing is a specialized manufacturer of small ball bearings imperial. Features:1),Shield / closure: Open,Teflon Sealed,Rubber Seals,2 ... , C4, C55),Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic6),Retainer: PTFE, Nylon, PEEK Or Stainless Steel7),Bore Size:from 1mm to 10mm8 ...