"Expand the versatility of your cupholder space. ToughTested Tough & Thirsty Mega XL Cupholder Expander and Gooseneck expands cupholder capacity to accommodate a wide variety of XL bottles, mugs, and cups up to 40 oz. (1.2L). Twist the base to customize the size to fit most cupholder sizes in vehicles, campers, boats, RVs, and more. A flexible 9"" gooseneck arm with Mega-Grip mount securely holds GPS, phones, tablets, and other devices up to 10.1""H. Arm adjusts to position your devices at an optimal viewing angle. Manufacturer's 5-year warranty.Manufacturer model #: TT-4S-TNT. Expands cupholder capacity Holds a wide variety of XL bottles, mugs, and cups Flexible 9"" gooseneck arm Mega-Grip mount securely holds devices"