Koyo Sangyo QGS10 rubber tube socket SL flexible type + small hose for city gas, inner diameter 9.5mm, length 75cm. I purchased this in the spring, but it didn't fit, so I'm selling it. I purchased the rubber tube socket already assembled. Please check the images for details. As a bonus, I'll include a 50cm rubber hose. Please let me know if you don't need it.