This USA made stainless steel valve is compatible with the following:
- FX Impact (including MkII, M3, and M4)
- FX Crown, FX Crown Arrow
- FX Boss
- FX Royale 500, FX Royale 400
- FX Verminator, FX Verminator Extreme
- FX Maverick
Fits any bottle with M18x1.5 neck threads.
