Ordering Description Product number Description: M73-415 WELD HEAD TOP ASSY 2IN-AVC 2 Cameras DIGITAL Product number: 13730100-05 Description: M73-415 WELD HEAD TOP ASSY AVC 2 Cameras DIGITAL Product number: 13730113-01 Description: M73-415 WELD HEAD TOP ASSY AVC NO-OPTICS Product number: 13730113-02