Barrow Fittings

[im4gine3]

Go a few sets of Barrow Twin Seal hard line fittings. They come with 2 spare O rings which is nice.. however i wonder, are both O-rings spares in case the inside gets shredded, or is one o-ring meant to fit under the collar, and the other as a spare?

 

[im4gine3]

ok cool good to know.. I know EK/BP fittings are the same, but they always came shipped with a o-ring in the collar.. so i just wanted to make sure for these ones.