... ,good service 4,ISO9001:2000 miniature bearings 5,12 years Miniature Bearings Application:Remote-controlled cars,bicycles,skateboard ... motor,fishing reel,food machinery,instrument,dental... Miniature Bearings Features:2,Structure:General,flanged,extended inner ring3,Shield ... : AISI52100, AISI440C, AISI304, AISI316, Ceramic8,Retainer: PTFE, Nylon, PEEK Or Stainless Steel9,Bore Size:from 1mm to 15mm10 ...