RAM Torque 3/8″ – 5/8″ Diameter Mini Rail Base with 1″ Ball, Medium Arm and X-Grip for PhonesTake your mobile entertainment on the road with the new RAM Torque handlebar and rail mounting base. Weve paired a B-sized 1 rubber ball base that accommodates bars 3/8″ – 5/8″ in diameter with a B-sized standard length arm and the dynamic X-Grip for phones. The mount utilizes nylon-insert locknuts to prevent loosening in high vibration environments. This low-profile mount is the perfect way to secure your personal electronics and small accessories in any high-vibration environment.The included X-Grip cradle has a clean and clever four leg design that sports great holding power without hiding your phone behind foam pads and plastic. The spring loaded X-Grip cradle expands and contracts, allowing for a perfect custom fit of your cell phone. The perfect complement to the modern sleek interior of today’s vehicles, the RAM X-Grip is the cell phone cradle evolved. The X-Grip includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.Mounting Base Dimensions:Accommodates rails 3/8″ to 5/8″ in diameterCradle DimensionsMinimum Width = 1.875″ (Minimum Height = 4.25″)Maximum Width = 3.25″ (Minimum Height = 2.25″)Depth = 0.875″Features:1. Rustproof2. High strength composite and stainless steel construction3. Spring loaded cradle expands and contracts for perfect fit of your device4. Rubber coated tips will hold device firm and stable5. Socket technology allows for multiple adjustment angles and articulation of device6. Includes Tether for open cockpit and extreme environments7. Lifetime warranty8. 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