The Lincoln K2703-1 kit is designed to allow the Magnum SG or Magnum 250LX spool gun to operate with the Power MIG welder. The kit includes the solenoid, gas lines, wiring harness and gun connection panel. The gun connection panel features a 6 pin MS-type connector for the Magnum SG spool gun and a 7 pin MS-type connector for the Magnum 250LX spool gun and a selector switch to choose which gun you are using.