Aluminium Double-sealed cylinder head

Produced by the well-known and reputable Taiwai brand Star Rainbow Company.
Made of Aluminium the piston head , has a double O-ring providing a better seal. 
The head works perfectly in combination with the SRC nozzle, as it has a revised neck diameter of 5.40mm.

The head also has a tapered bumper, improving the air cushion effect in combination with piston heads whose vents are widely spaced along the contour of the piston head disc.