COPLAY NORSTER, Fahreinheight, 4-MFA-1 Professional Heating Nozzle is for use with 100FC series torch handles. Multi-flame heating head for heat treating, straightening, and priming. Fuel gas usage is Acetylene and Hydrogen. Overall length of 12 inches. Oxygen pressure in PSIG is 8/12 and fuel pressure is 6/10. Oxygen consumption in SCFH is 7/22 and fuel consumption in SCFH is 6/20.