Smith Equipment SC50-1 Cutting Tip, 2-Piece, Series: SC50, Size: #1, Flow Rate: Oxygen: 85 scfh (Cutting), Propane: 15 - 70 scfh, Natural Gas: 40 - 70 scfh (Preheat), Pressure: Propane: 10 psig, Natural Gas: 6 psig (Preheat), Oxygen: 40 psig Regulator/Torch (Cutting), Flame Type: Heavy Preheat, Gas Service: Natural Gas, Propane, Cutting Thickness: 5/8 Inch, Cutting Width: 0.08 Inch, Cutting Speed: 17 in./min.