1)6204 Ball bearings, Chrome steel 2)605-6015,625-6215,6300-6315. 3) ... Cixi Ouji Bearing CO.,LTD is a Ball bearings OEM manufacturer .As a specialized manufacturer and exporter for this product in China,we ... Closure:Plain(Open),Z,ZZ,RS,2RS,UG.5)Vibration and Noisy level: Z1,Z2,Z3,ZV1,ZV2.ZV3.Z1V1.Z2V2 ... box packing .10)Certificates: ISO 9001,200011)Producing range : Standard and non-standard bearings .