The Weldmark® by Victor® Acetylene Airco® 144 series Oxy-Fuel Size 0 Cutting Tip has a cutting capacity of 0.125 inches. This general purpose Airco® series tip is 1" long and 1" wide, and comes in one piece. It is ideal for hand and machine torch cutting on 4700 series machine torches. It is compatible with 3500, 3700, 4800, 5700 and 5800 cutting attachments, and is capable of cutting 21-24 inches per minute. It's designed for use with Acetylene, with a max Acetylene pressure of 1.5 and a max cutting oxygen pressure of 30. Oxy-Fuel cutting is a thermal cutting process utilizing oxygen or fuel gases to cut through metals such as mild steel. In this process, the torch heats the steel to its ignition temperature, after which oxygen is directed to the cutting point, burning it into a metal oxide. A stream of gas blows the metal oxide away from the work area, resulting in a clean cut.