Hypertherm® 120934 Plasma Consumable, Shielded Clockwise Nozzle Assembly, 15/16 Inch Diameter x 1-3/8 Inch Length, High Quality Copper, Amperage: 400 amp, Compatibility Gas Type: Oxygen, Applicable Materials: Mild Steel, For Type/Brand/Model: HySpeed® HT4000 Plasma Cutting System, HT4400 Torch