Nylon liner to suit Tweco 4 style mig gun. Suit 4.5mt mig gun, 1.0-1.2mm Ally wire.
Steel liner with Nylon inner core, offers additional rigidity in the mig gun when welding Aluminium, with the additional viscosity for the wire to slide smoothly.
These liners are manufactured from steel outer nylon inner which gives added viscosity and durability whilst welding Aluminium wire.