The RAM-B-166-UN8 consists of a 3.25″ twist lock suction cup base, double socket arm and universal spring loaded X-Grip® II holder for 7″ tablets. The suction cup, twist lock base is designed to have a strong hold on glass and non-porous plastic surfaces, including RAM adhesive disks. Designed into the mount is a 1″ diameter patented rubber ball and socket system with adjustment points at the both ends of the socket arm; this with a twist of the arm knob, allows you can move the mount to your optimum viewing position. The spring loaded X-Grip® II holder expands and contracts, allowing for a perfect custom fit of your 7″ tablet. Included are extra easy access grip knobs, located on the back of the holder for quick release of your tablet. Compatible Devices (WITH OR WITHOUT CASE): Amazon Kindle Amazon Kindle Fire Amazon Kindle Fire HD Amazon Kindle Fire HD 7″ 3RD GEN Amazon Kindle Fire HDX 7″ Apple iPad mini Apple iPad mini (with Retina Display) Archos 7 Asus EEE Pad Memo Barnes & Noble NOOKcolor BlackBerry PlayBook Dell Streak 7 HTC Flyer Motorola XYBOARD 8.2 Pantech Element Panasonic Toughpad™ JT-B1 Samsung Galaxy Tab (7″ version) Samsung GALAXY Tab 7.0 Plus Most 7″ Screen Tablets All devices that maintain the following dimensions below: X-Grip® II Holder Dimensions: Minimum Width = 2.25″ (Devices 2.25″ in width must be a minimum of 7″ in height to fit) Maximum Width = 5.75″ Depth = 0.875″ Features: 1. Spring loaded holder expands and contracts for perfect fit of your tablet 2. Rubber coated tips will hold your tablet firm and stable 3. Versatility of holder allows for attachment to many RAM 1″ socket mounts 4. Socket technology allows for multiple adjustment angles and articulation of your tablet 5. Easy access grip knobs, located on the back of the holder for quick release of your tablet 6. Lifetime warranty 7. Made in U.S.A.Material: Powder Coated Marine Grade Aluminum, Marine Grade Stainless Steel Components & High Strength CompositeBall Size: 1″ Rubber Ball „B” Size Note: Part number reflects product packaged in clear clam shell for store shelf display.