Cutting Tip, Compatible Fuel Type Propane, Tip Series 107, Tip Size 4, Tip Design Two Piece, Minimum Cutting Thickness 40 in, Maximum Cutting Thickness 50 in, Compatible Manufacturer Koike, Flame Type Medium Preheat, Kerf Width 0.11 in, Maximum Cutting Speed 12.5 in/min, Pressure Rating (Fuel) 2.1 psig, Pressure Rating (Oxygen) 45 psi