This Generic Fill Probes fit most PCP Airguns, which includes: The FX Verminator, FX Verminator Mk11, FX Verminator Mk11 Extreme, FX Typhoon, FX T12, FX Royale 300, FX Royale 400, FX Royale 500, FX Ranchero, FX Cyclone, FX Bobcat, FX Wildcat, FX Bobcat MK11, FX Indy, FX Indy Arrow, FX Biathlon, FX I..