Originally Posted by gaucho777

I have one I would be glad to send you. Forum member VJP gifted me a Vitus cable guide for use with a non-Vitus frame, and it didn't fit my frame. I would be glad to pay it forward again. PM me your address (you may need to make 3 more posts).

Btw, some BB guides use screws, but I believe the OP is correct that the Vitus guides simply snap in place and then are held in place by the cable tension.