Ordering Description Product number Description: M9E-750 WELD HEAD TOP ASSY WC OFFSET SPCL GAS SEAL Product number: 13090020-11 Description: M9E-1500 WELD HEAD TOP ASSY Product number: 13090040-04 Description: M9E-2500 WELD HEAD TOP ASSY Product number: 13090050-02 Description: M9E-2500 WELD HEAD TOP ASSY 25FT/7.5M CABLE Product number: 13090050-04 Description: M9E-3500 WELD HEAD TOP ASSY Product number: 13090060-02 Description: M9E-4500 WELD HEAD TOP ASSY Product number: 13090070-02 Description: M9ER-4500 WELD HEAD TOP ASSY Product number: 13090070-03 Description: M9E-7500 WELD HEAD TOP ASSY Product number: 13090080-02