Fit for FC90: Specifically designed for FC90 and compatible welding accessories, these 0.3" orifice nozzles a precise fit to the nozzle seat. This tight fit reduces heat loss and enhances stability during welding operations, making them ideal for high- welding tasks. Enhanced Airflow Design: The tapered of these nozzles focuses the gas , enhancing welding accuracy. Smooth internal walls minimize airflow friction, which improves the quality of the welds and increases the overall efficiency of the welding process. Brass Construction: Made from high-quality brass with a sleek black finish, these nozzles resist wear, deformation, and thermal stress. Their robust construction ensures reliable performance in harsh welding environments, such as workshops and construction sites, providing and durability. Bakelite Protective Layer: Each nozzle features a protective bakelite layer that prevents damage to the threads and openings on MB15 14AK 15AK nozzle seats. This layer preserves the integrity of your equipment in various welding applications, including gas shielded welding and metal processing. Comprehensive 6-Piece Kit: This set includes six flux core welding nozzles, providing a reliable replacement supply for continuous operation. It's perfect for use in automotive manufacturing, ship repair, and other industrial welding tasks, ensuring you have the necessary components for any project., Weight: 0.15542589471 pounds, Manufacturer: Aboiled