Plus Series Torches, 10 in 90 Deg Head, Tip Series:1 ORS NASCO Multi flame heating head for pre heating Multi flame heating head for pre heating Steel Metal Arbor Diam [Nom] 7 8 in Big Catalog NO Brand NORTON Catalog MPI Catalog Color Black Construction Catalog NO Country of Origin CN Dia preheat control valve flow and reduced user fatigue due to improved balance Improved access and reparability of mixer with single nut removal Superior cutting oxygen valve with improved feathering ease on control No wrench flats on connection nut indicates hand tightening only for safer operation Internal connection snap ring prevents coupling nut sliding and exposure to o rings for reduced damage Improved head durability