The Everlast EV-AS12-NK-5 nozzle kit is a five-piece set of copper nozzles designed for the AS-12 model. Each nozzle has an M16 thread and a height of 35 mm, and the kit supports wire guiding for 0.8 mm, 0.9 mm, and 1.2 mm wire diameters. Copper construction provides durability and long service life, and the nozzles are suited to flat, bevel, and inside corner welding applications.