Item: Quick Express Couling Material: brass Type: French type Size: 3/8" , 1/2", 3/4", 1", 1- ... 1/4", 1-1/2" Item: Quick Express CoulingMaterial ... : brassType: French Thread: FemaleSize: 3/8" , 1/2", 3/4 ... are not interchangeable with Geka and European air co brass quick express coupling