Cutting Tip 2 Piece O-FS Size 42 Gas Service MAPP Flame Type Medium to Heavy Preheat Steel Thickness 4 in to 6 In. Fuel Pressure 10 to 17 psi Oxygen Pressure 60 to 75 psi MAPP Gas Silver Solder No MAPP Gas Silver Braze No MAPP Gas Soft Solder No Propane Gas Silver Solder No Propane Gas Silver Braze No Propane Gas Soft Solder No Silver Solder Tube No Soft Solder Tube Cap. No For Use With Oxweld Products