Threaded copper nozzle extension stem for Lincoln Electric Sub Arc Welding.

• 8 size variables (1″, 2″, 3″, 4″, 5″, 6″, 7.5″, 9″)
• The 4″ has a bolted variation

All these nozzle extension stems will fit Lincoln Electric NA-3 and NA-5 sub arc feed systems, and ESAB A6 Arc Master sub arc feeders that have been converted.