These adapters are for Wildcat shrouds that extend past the air tube and has female threads once you remove the front shroud cap. It is also compatible with FX Royale 400. This adapter is Male to Male, one side is M20x1 that goes into the shroud and the other end is 1/2 x 20 UNF.
Made by CNC for accuracy
Material is 6061 T6 Aluminum
Diamond pattern knurling for easy grip