Weldcraft™ Small Alumina Gas Lens Nozzle, #4 (1/4 in.)
For use with A-80, A-125, A-150, A-200, A-250, W-180, W-200 Pencil Flex, W-225 Pencil, W-250, W-280, W-310, W-350, W-375, W-410, A-150 Modular, A-200 Modular, W-225 Modular, A-150 Auto, W-250 Auto, and W-500 Pencil Auto TIG Torches.