Description The Lincoln Electric LE31MP Flux-Cored Welding Nozzle is for protecting the threads and openings of the gas diffuser and contact tip holder during the flux-cored welding process. The flux-cored nozzle also insulates the operator from the electrical circuit. Longer life and fewer tip changes reduces expendable part and labor costs while increasing productivity.To be used when flux cored weldingTo be used with the Lincoln Electric LE31MP machineMagnum Pro is used on many Lincoln Electric industrial machinesExtended nozzle life to lower overall operational costsAnti-seize threads makes replacement easierProtects gas diffuser in welding gunInsulates operator from electrical circuit