The RAM Tough-Claw Small Clamp Base with RAM Vibe-Safe Adapter (RAP-400-462NPT) is a combination of the small RAM Tough-Claw base 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 RAM Tough-Claw base securely attaches to round, square, and odd-shaped rails and bars ranging from .625" to 1.14" in outer diameter. This low-profile base is compatible with most 2-Hole RAM Holders, including the RAM Quick-Grip, RAM Tough-Charge, RAM Quick-Charge & RAM Form-Fit Holders.