... Ball:Si3N4,Zro2,Sic,AI203 High Quality Hybrid Ceramic Ball Bearings Features and specification of XBL bearingRing MaterialGCr15, GCr15SiMn, Bearing steelCagesteel ... 130% T/T in advance, 70% T/T against copy of B/LPayment Term 2100% L/C at sightserviceOEMPackingAccording to the ... machinery. SalesAmy Matelephone number0086-15957493720Fax.0086-574-63046362 High Quality Hybrid Ceramic Ball Bearings