ESAB S-4 Sof-Flame Replacement Tip, Acetylene Fuel, For Use With: WA-400 Torch HandlesTURBOTORCH Replacement Tip, S Series, Acetylene Fuel, 5 to 15 psi, For Use With: WA 400 Torch Handles, 1 2 to 1 in Soft Solder, Brass Constructed of solid brass, Sof Flame&trade tips add flexibility to the standard kit, increasing the range up to 4 inSof Flame&trade torch kits offer proven durability and performance for plumbing applications in harsh environments