This Lava nozzle comes in a 10-pack. In addition, it is designed for applications including non-gas lens. Plus, it is compatible with 17, 18, 26, A-150, A-200, A-250, HW-17, HW-26, PTA-17, PTA-26, PTW-18, W-350, W-410, 17, 17F, 17FV, 17FVB, 17HP, 17HPV, 17V, 18, 18-90, 18HP, 18P, 18V, 26, 26F, 26FV, 26FVB, 26HP, 26HPV, 26V, 301525, 301526, CS410A, HW-17, HW-17F, HW-1 and more under the Miller brand. It can be used for TIG welding.