3-Inch Extension.For use with 809 Suction Cup Mount (B000246ST6). Must purchase or already own a PanaVise 809..Adds 3-inches in length to the 809 Suction Cup Mount The PanaVise 3 inch extension adds extra length to the 809 series suction cup mounts. This extension is ideal for use with the 809 Camera Window Suction Cup Mount inside vehicles with steeper pitched windshields to mount most digital cameras and camcorders. Includes installation hex key for easy installation. You must purchase or already own a PanaVise 809 suction cup mount to use this extension.Company Information: PanaVise is a major manufacturer of innovative holding solutions. All PanaVise Products are covered by a Limited Lifetime Warranty!