Smith Equipment SC50-3 Cutting Tip, 2-Piece, Series: SC50, Size: #3, Flow Rate: Oxygen: 180 scfh (Cutting), Propane: 16 - 75 scfh, Natural Gas: 40 - 70 scfh (Preheat), Pressure: Propane: 10 psig, Natural Gas: 8 psig (Preheat), Oxygen: 47 psig Regulator/45 psig Torch (Cutting), Flame Type: Heavy Preheat, Gas Service: Natural Gas, Propane, Cutting Thickness: 2 Inch, Cutting Width: 0.10 Inch, Cutting Speed: 10 in./min.