PLEASE READ... VERY IMPORTANT!! FOR YOUR SAFETY!! These are European cylinder valves with M25 thread. THEY WILL NOT WORK on american cylinders that have a standard 3/4" thread. If you do not know what this means, DO NOT BUY THEM. It is extremely dangerous to put these valves into an american tank. It will feel like they fit until they shoot out of your cylinder while being filled like a rocket. I have 3 idential valves available.
