The RAM® X-Grip® Large Phone Mount with Vibe-Safe™ & Fork Stem Base - Short (RAM-B-176-A-UN10-462) is a combination of the RAM® X-Grip® Phone Mount with Motorcycle Fork Stem Base and the RAM® Vibe-Safe™—our vibration damping accessory is designed to protect electronic devices from a wide range of vibration frequencies. This product comes pre-assembled with the device tether that is recommended for outdoor applications. This product comes with one (1) short B size arm and one (1) RAM® Motorcycle Fork Stem Ball Base and an optional device tether that is recommended for outdoor applications. 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.