The Tweco 42404515 Conduit Liner is designed to deliver smooth and consistent wire feeding for welding applications. Suitable for wires ranging from .040" to .045" (1.0 to 1.2 mm), this liner ensures minimal friction, reducing downtime caused by jams and improving the reliability of your welding equipment. Ideal for use in a variety of Tweco-compatible MIG welding guns, it provides enhanced durability, precision, and ease of maintenance.