Unipipe 63 mm 2 1/2'' Aluminum Compressed Air Straight Coupling  UACC0.063063

For Compressed Air (also rated for oils and coolants)
Max Working Pressure 232 PSI (16 bar)

20 Year Leak Free Warranty

https://youtu.be/v4ZcueSjIuY?si=wxNXzthKHrn28uA1