Gravity Stands GR-GMADRINKL Large Drink Holder For Microphone Stands
Yep, this is precisely what you think it is: a Gravity Stands Large Drink Holder. It's really well made!
This drink holder features a unique screw clamp that is adjustable for vertical or horizontal mounting options. It fits on mic stands, speaker stands and music stands with tubing diameters up to 35 mm as well as table tops and securely holds bottles, cans, cups and glasses with a maximum diameter of 90 mm.