Features: Aluminum double Ball Adapter provide a secure 360° rotation for best device positioning, suitable for mounts and build with strong, corrosion resistant for long lasting Performances. with double ball sockets, this adapter enables smooth horizontal/vertical adjustments and tool frees installation, perfect for dynamic environments requiring quick setups. Designed for motorcyclists, cyclists, and outdoor Devotees needing stable mounting solution for locate , phones, or communication radios during hard adventures. Ideal for Motorcycles handlebars, Kayaks rigs, or industrial equipment, it withstands vibrations and moisture while maintaining secure alignment in extreme conditions. Achieve hands frees convenience with its Precisions engineered double ball design, ensuring devices stay firmly in place during high speed rides or unpaved navigation. Specifications: Component: Aluminum Size: 5x3x2cm/2x1.2x0.8inch Type: 25mm to 25mm/15mm to 17mm/17mm to 17mm(optional) Package Includes: Pair Double Ball Head Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.