Smith Equipment SC50-5 Cutting Tip, 2-Piece, Series: SC50, Size: #5, Flow Rate: Oxygen: 550 scfh (Cutting), Propane: 20 - 90 scfh, Natural Gas: 50 - 82 scfh (Preheat), Pressure: Propane: 10 psig, Natural Gas: 8 psig (Preheat), Oxygen: 78 psig Regulator/70 psig Torch (Cutting), Flame Type: Heavy Preheat, Gas Service: Natural Gas, Propane, Cutting Thickness: 8 Inch, Cutting Width: 0.15 Inch, Cutting Speed: 5 in./min.