Topeak Bar 'N' Mirror - Ergonomic Bar Ends with Integrated Mirror

I bought a pair of these for european touring as you get a view on both sides. The view is adequate once they are set to suit your height and riding position, but not a very large field of view..
My main complaint is that the glass is only held in by small lugs. I have had glass drop out before and managed to retrieve it and put it back, but on my last trip the glass fell out and broke, so I really have to replace the pair