Rail Blaza Cup Clam #02-4013-11
The Railblaza CupClam drink holder can be mounted in either horizontally or vertically-mounted StarPorts, to hold mugs, stubbies, wine glasses, even wine bottles. The extendable fingers hold the taller items in place, yet everything collapses into a convenient flatpack for storage.
If you can’t hold your drink, the RAILBLAZA CupClam will.