Harris® 1390N size 10 alternate fuel gases brazing tip with 3/8" - 24(M) thread connection is compatible with Models B-15-3, B-15-3F, B-15-3S, B-43-N, D-85, E-43, E2-43, E3-43 (F-43), H-16-E, H-16-2E, H-16-S mixers and Models 8493-N, 8593, D-50-C, D-50-CXL, T-43 tip tubes. Tip is used for arts and crafts, HVAC, maintenance and production brazing.