Description If you are looking for a professional and affordable desk cup holder, then your research is over here. That's because our product can meet your need. Adopted of premium material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Material: plastic Inner diameter: 9.4cm, 8cm, 7.4cm - Simple to use, no accessories required: directly rotate the inner or outer parts to adjust the inner diameter of the cup frame. - Suitable for PET bottles, mugs, coffee cups, glass, insulation cups, aluminum cups, tea cups, and beer mugs with a diameter of about 94 mm. Don't worry about falling. - It comes with installation tools. And prepared a sophisticated design to make the product easier to install and use. - Waterproof and anti-fouling: In order to prevent the liquefied water on the cold drink surface from dripping on the bottom of the drink holder and causing stain. - Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. Simple to use, no accessories required: directly rotate the inner or outer parts to adjust the inner diameter of the cup frame. Suitable for PET bottles, mugs, coffee cups, glass, insulation cups, aluminum cups, tea cups, and beer mugs with a diameter of about 94 mm. Don't worry about falling. It comes with installation tools. And prepared a sophisticated design to make the product easier to install and use. Waterproof and anti-fouling: In order to prevent the liquefied water on the cold drink surface from dripping on the bottom of the drink holder and causing stain. Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience.