http://www.ioffer.com/i/ogb-14-12-glass-on-glass-to-rubber-grommet-adapter-15-141209447 I hate the grommet because I want a GonG. Would this work? Sent from my iPhone using Grasscity Forum
It depends. As the listing says: "If your opening is about 14mm then this 12mm down tube and rubber grommet will fit your opening. If your opening is about 17mm then you will need one of my 15mm down tube ones." You're gonna need to bust out a ruler.