... No.6306Quality StandardISO 9001:2000 StandardSize30*72*19mmWeight:0.34kgFeaturesSeal :Seal Precision:P0,P6,P5,P4,P2 Clearance:C2,C3,C4 ... ,C5 Tolerance Rating:ABEC-1,ABEC-3,ABEC-5, Vibration Rating:V1.V2.V3.V4 Noise Standard:Z1,Z2 ... 's requirementsPayment TermsTT L/C at sight Western Union D/P D/A PortTianjin Steel Seal Deep Groove Ball Bearing SKF 6306