The RAM Quick-Grip XL Phone Holder with RAM Vibe-Safe Adapter & Ball (RAM-HOL-PD4-462B) is a combination of the RAM Quick-Grip XL Phone Mount with Low-Profile Small RAM Tough-Claw and the RAM Vibe-Safe - our vibration damping accessory is designed to protect electronic devices from a wide range of vibration frequencies. The RAM Vibe-Safe is based on an NPT connection point and boasts the versatility to rotate between portrait and landscape while keeping your device secure in rugged environments. The 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.