Feature:This car air vent cup holder is used to hold your water bottle in the car and effectively avoid falling off the bumpy road.Made of durable material plastic with long life service, keep your bottle always stable hold, and safe.The anti-skid design of it is added to reduce the shaking and collision of the cup and prevent scratching.The bottom support frame is adjustable and can be extended up to 30mm/1.18", which is suitable for automobile vents in different positions to keep the cup holder stable. Easy installation, no cutting or drilling required. The package includes installation tools.Choose the required clips according to the different sizes you need.Universal fit for car, boat, marine, caravan, and RV.Specification:Color: BlackMaterial: PlasticSize: 90x70x85mm / 3.54"x2.76"x3.