1Suitable Cups: Car cup holders are perfect for most large bottles or cups with diameters between 3.4 inches and 3.7 inches. The adjustable buckle and bottom coaster in the cup holder can make your cup more stable during driving. The main cup holder is compatible with cups with diameters ranging from 2.4 inches to 3.74 inches, such as cups with handles; The upper cup holder has a diameter of 2.87 inches and is suitable for ordinary fast food cups, such as coffee cup and beverage cup. 2Detachable Desktop Tray And Phone Holder: Our four in one car desktop tray can rotate 360 degrees, helping you flexibly use the interior space, such as a storage box for storing dinner plates or small accessories. You can watch videos while eating through the phone slot. Place hamburgers, french fries, coffee, mobile phones, napkins, wallets, sunglasses, credit cards, keys, coins, etc. 3Adjustable Solid Base: The bottom of the cup holder tray is designed with rotating and adjustable telescopic buckles, which can support larger cup holders (with a minimum diameter of 2.36 inches to a maximum diameter of 3.7 inches). The silicone anti slip pad on the buckle surface provides strong friction, which can effectively prevent displacement and detachment during use. Our car table tray is detachable and can be removed when not needed. 4Wide Compatibility: The adjustable buckle allows the car cup holder to expand to fit most different cars on the market, especially most circular car cup holders such as SUVs, trucks, RVs, etc. However, please note that cup holders such as square, irregular, tilted, flip over, or those suspended above the cup holder on the dashboard may not be compatible with our cup holder. 5Long Distance Travel Gift: Multi functional car cup holder expansion tray is made of Abs plastic, sturdy, durable, and easy to assemble and disassemble. The most necessary car accessory for road travel on your journey.