Non-threaded replacement gun nozzle with 1/2 inch (13 mm) diameter orifice. Contact tip is flush with end of nozzle. Nozzles focus the shielding gas as close to the welding arc as possible to minimize spatter. For use with M-25 and M-40 MIG gun (standard gun on most Millermatic 200, 210, 212, 250, 251, 252, 300 and Vintage MIG welders).