Features: The 17mm female ball socket adhesive mounting base features strong bonding technology and 360 degree rotation, offering universally compatibility with phone holders, tablet mounts, and action cameras. Crafted from plastic, this double sided adhesive base securely attaches to surfaces while its standardized 17mm socket enables flexible positioning adjustments for optimal viewing angles. Ideal for driver needing dashboard phone mounts, content creators using action cameras, and DIYer enthusiasts organizing tools or control panels. Perfect for vehicle interiors, workshop tool stations, or home offices where reliabled device mounting on uneven surfaces is required. Engineered with vibrations resistant adhesive that maintains grip during sudden stops or rough terrain, ensuring stable device fixation across mobile accessories and camera mounting systems. Specifications: Component: Plastic Base diameter: 7.8cm/3.07inch height: 3cm It is suitable for various 17mm ball head mobile phone holders and mobile phone tablet holders Package Includes: 1pcs Adhesive Mounting Base note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.