Koike Aronson Inc 107D7 Series Size 6 Natural Gas Divergent High Speed Cutting Tip is designed to cut the plate of thickness 4 - 5" with a cutting speed of 10 - 9 inches per min. Cutting tip is ideal for proper gas efficiency and provides maximum cutting accuracy. Cutting tip requires 100 PSIG cutting oxygen pressure and 55 PSIG preheat oxygen pressure with 2.1 PSIG fuel pressure.