round ball bearings small:1,ABEC-3,5;Z2V2, ... C2,C0,C3... Lily bearing is a specialized manufacturer of round ball bearings small.Features:1),Shield / closure: Open, ... , C55),Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic6),Retainer: PTFE, Nylon, PEEK Or Stainless Steel7),Bore Size:from 1mm to 10mm8 ... Hybrid Ceramic Bearings Hybrid Ceramic Bearings High Performance round ball bearings small