1. The diameter of the barbed end is around 17mm, therefore, you can use it to connect to:
(1) Nylon hoses with Internal Diameter around 14-15mm. You may need to use professional tools to connect Nylon hoses
(2) Rubber hoses with Internal Diameter around 15-16mm. You may need to use a hose clamp to fasten.
This listing is 1 PCS (1 male) of high quality fuel line quick connect/disconnect guaranteed for performance. This allows you to quickly connect the fuel lines by pushing-in and disconnect by simply pulling out while pressing the lock buttons. It is made of quality materials compatible with fuel/gas, and other common fluid types. Compliant wth SAE automotive standards. The barbed ends connect to fuel lines or hoses. This quick connect does not have shut-off feature. Check out the listing pictures for approximate measurements of the outer diameter of the female and male ends to determine what is best for you.