These replacement spouts will fit most Italian made powder flasks. These are the Zouave, Remington, Navy, Lyman and Italian made horn valves and others that have a thread size of 10 X 1m. They will fit our HA0460, HA0250, and HA0160 Colt, Remington, and Zouave flasks and our NA0550 and NA0560 flask heads. All spouts are made from brass and may be reduced in length by filing to adjust for the exact black powder charge required. These spouts are for measuring black powder only. The indicated charges are at best only approximate because of the difference in powder grain size and other variables. The specified charge weight was determined with 3F black powder.