The X-Grip® IV has a clean and clever four leg design that sports great holding power without hiding your phone or phablet behind foam pads and plastic. The perfect compliment to the modern sleek interior of today's vehicles, the X-Grip® IV is the phablet holder evolved. Compatible and interchangeable with a wide range of popular RAM Mounting products, this elegant holder is ready to compliment your phablet and become the most useful accessory in your vehicle.The X-Grip® IV holder 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.Holder Dimensions:Minimum Width = 1.75"Maximum Width = 4.5"- Rustproof- High strength composite and stainless steel construction- Spring loaded holder expands and contracts for perfect fit of your device- Rubber coated tips will hold device firm and stable- Versatility of holder allows for attachment to many RAM ball mounts- Lifetime warranty- Made in U.S.A.Material:High Strength Composite & Stainless SteelBall Size:1" Rubber Ball "B" SizeNote:RAM Highly Recommends adding a secondary tethering device for all open cockpit applications while using this product. The "U" in the part number reflects product packaged in poly bag.