Ahh ok I'll use the old guide that came with my frame.

The housing ends... so I opened up the Jagwire ones (I called them Racer but the package says Road Pro btw, not sure but I must have read Racer somewhere on there). Also put the cables side by side. I'd be hard pressed to tell a difference but .5mm isn't much. The shift cable seemed to be a fine fit and the casing... well maybe it is just a hair loose but there really isn't any play with them fitted. I didn't have to force them on, but there is maybe only paper thin space between them. If they really need to be a tight fit can I wrap the housing end with a wrap or two of electrical tape or just a light coat of silicon?