Cupinserts® can be installed and removed within seconds, by anyone, without need for any modifications or certification. Hold square and round bottles, odd shapes, espresso mugs, beer bottles, cans, highball glasses, stemware, wine bottles and many other items that normally tip, spill or fall out of traditional cup holders. Cupinserts® can be used immediately upon receipt. All products are 100% aluminum, ready for plating and made in the U.S.A.