Versatile 1.5 Inch Ball Head Design: Features a large 1.5 inch ball head that allows for 360 degree rotation and multi angle adjustments, enabling users to easily find the most comfortable viewing or operating position for their tabletMaterial: Built with high strength rubber and aluminum alloy materials and treated with anti rust processes, this 1.5' Ball Mount offers good weather resistance, making it ideal for use in outdoor, agricultural, and industrial environments while maintaining stable performance over timeEasy Installation and Portability: Designed for quick and easy installation and removal, the 1.5in Ball Mount Base can be reused multiple times, allowing users to conveniently move and reinstall the mount in various settings as neededSize: Featuring a ball head diameter of 38 mm to ensure compatibility with a wide range of devices while maintaining ease of transport and storageCompact Packaging: Comes with a Ball Metal Round Adapter Plate per package Specification: Ball Diameter3.8cm/1.50inch Package Includes: 1Pcs Ball Metal Round Adapter Plate (1.5") Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.