The package includes 4 flux core gasless nozzles (KP1939-1), 4 gas diffusers, 21 contact tips (0.030 inch / 0.8 mm), and 21 contact tips (0.035 inch / 0.9 mm). This set is suitable for use with various welding machines and multiple welding applications. It provides sufficient components for replacement and daily use. The gasless welding nozzle is constructed from heat-resistant ABS material, which helps reduce arc heat loss and secure the thread and opening of the nozzle seat, extending service life. It prevents nozzles from loosening or breaking, enhancing welding performance and user experience. The gas diffuser features a standard threaded size and excellent electrical conductivity, making it ideal for light to medium-duty welding tasks. Two sizes of copper contact tips are included to meet different needs. These tips are durable, resistant to high temperatures, and offer superior electrical conductivity for reliable welding performance. These flux core welding replacement accessories are compatible with Magnum 100L welder, Weld-Pak 100HD, 125HD, 140HD, 180HD, SP-170, Mig135, Mig175, and other similar models. Please verify compatibility with your welding machine before purchase. Color: As shown. Material: Aluminum alloy + brass. Package Contents: 1 set of MIG welder accessories. Note: Lighting effects and monitor settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.