Harris® 8490N size 6 alternate fuel gases brazing tip with 1/4" - 27(F) thread connection is compatible with Models 8493-B, 8493-N, TH-50-2, TH-50-2XL tip tubes, Models B-15-3, B-15-3F B-15-3S, H-16-E, H-16-S mixers and Models 15-4, 15-5, 19-6, 19-6A, 50-10 torch handles. Tip is used for arts and crafts, HVAC, maintenance, and production brazing.