TORQUE 3/4" - 1" DIAMETER HANDLEBAR /RAIL BASE WITH 1" BALL, STANDARD ARM AND X-GRIP FOR PHONES Mounting Base Dimensions: Accommodates rails 3/4" to 1" in diameter Cradle Dimensions: Minimum Width = 1.875" (Minimum Height = 4.25") Maximum Width = 3.25" (Minimum Height = 2.25") Depth = 0.875" Features: 1. Rustproof 2. High strength composite and stainless steel construction 3. Spring loaded cradle expands and contracts for perfect fit of your device 4. Rubber coated tips will hold device firm and stable 5. Socket technology allows for multiple adjustment angles and articulation of device 6. Includes Tether for open cockpit and extreme environments 7. Made in U.S.A. Material: Powder Coated Marine Grade Aluminum, Marine Grade Stainless Steel Components & High Strength Composite Ball Size: 1" Rubber Ball "B" Size