Breville Infuser Dual Double-wall Espresso Cup Holder

I use two 2.7oz double-wall espresso cups https://www.amazon.com/gp/product/B07GL55KSN/ with my Breville Infuser to do double shots. Normally the vibrations of the espresso maker would cause the cups to walk around the drain tray plate. This holds them in place during the pull so I don't lose any of that precious caffeinated elixir.