The RAM X-Grip Large Phone Holder with Ball y Vibe-Safe Adapter from RAM MOUNTS holds devices 1.75 to 4.5' in width, up to 0.875' in depth, and attaches to B size RAM components. When tightened, this mount holds up to 2 lb, but when loosened for landscape orientation, it can hold up to 1 lb. The optional tether keeps your device secure for outdoor applications and Vibe-Safe technology dampens vibration frequencies, making it perfect for vehicle mounting. The Stainless Steel and high strength composite build keeps the holder durable and better protects your device.