Cutting Tip, Compatible Fuel Type Natural Gas, Propane, Tip Series 4203, Tip Size 4, Tip Design One Piece, Maximum Cutting Thickness 5/8 in, Compatible Manufacturer Purox, Application General purpose, Flame Type Medium Preheat, Pressure Rating (Fuel) 2 to 5 psi, Pressure Rating (Oxygen) 12 to 45 psi