Wine glass base extender

Base extender for a couple of wine glasses including a champagne flute so can be left on slightly non-flat surfaces, like on a sofa cushion. The extension widens the base and should make it harder to knock a precariously place glass over.
58mm and 79mm were the diameters of the bases of my two glasses, so I made the bases 1mm bigger. They work fine. Scale yours bigger or smaller to fit I guess.

The hooks are 5mm tall and 5mm long, seems to be enough to fit the glasses perfectly.