Sorry about that. I assumed it worked for all Brooks. The ad showed the Glycerine 8, but did not specify that it was limited to the Glycerine 8. The link to the ad is below.
https://endurance.competitor.com/...2wfG0Xb9X%3DTWTYCWT.
https://endurance.competitor.com/...2wfG0Xb9X%3DTWTYCWT.