... ,Steel,Carbon steel,Copper,Nylon,etc.ID Size4-300mmCertificationISO9002,QS9000,ISO14000,TS16949PrecisionP0,P4,P5,P6ClearanceC2,C3,C4SealingOPEN,ZZ,2RS,Z,2RSDelivery ... , ZWZ bearing, HRB bearingTel0086-531-67890572Fax0086-531-61389385MSNbearing2222Yahooolivia19881208Skypeolivia19881208Websitewww.haokun.org joint Rod End Bearing