Quote Originally Posted by nipper575 View Post
They are part of the block, I guess you could call them spacers. Unlike the GTZ, this block doesn't have the recess around the o-ring which is preferable to me for fitting the BP barbs which have their own recess. I only did them up finger tight.

edit: This picture gives a better idea, sorry about the quality btw...

Nipper: Swiftech logo is just a sticker. Simply twist cw to staighten it up.