The Original SwirlyGig drink holder holds most common beverage containers. Use it for cans, glasses, water and beer bottles, or as a place to hold other items like remote controls, phones, harmonicas, capos, reeds, pencils and picks. The inside of the basket is 3 inches x 4 inches on the black version, and 3 1/8 inches x 4 inches on the silver version. It is remarkably simple to use, it has no moving parts, nothing to adjust or wear out. It was designed to fit on 1/2-inch tubing (which is about the size of a dime) and fits snuggly, using only friction and gravity, on a standard mic stand. The SwirlyGig drink holder is made of resilient spring steel, then coated in protective PVC for grip and durability. The Original SwirlyGig drink holder also works great on lawn chairs, ice houses, bird feeders, boat rails, crutches, lamps or any vertical 1/2-inch tubing. All of our products are manufactured in the United States.