... :2000 system passedmain market:Europe America East Asiamaterial:chrome steel, carbon steelcage:steel brass nylonBrand Name:THFZBearing services:OEM servicesBearing precision ... ,23240,ect.2, price : 0.089-200 USD3, retainer: cooper cage, nylon retainer, steel retainer, bakelite retainer, ect4, quality standard: ISO9001 ...