Features: The Handlebar Clamp Mount Base features a 17mm Balls, ensuring a secure and attachment for your bike or motorcycle phone mount holder. This mount base accommodates rails ranging from 0.5'' to 2'' in diameter, providing stability and reliability for various mounting needs. For cyclists, motorcyclists, and content creators, this mount base is perfect for anyone needing a adaptable solution for their mobile devices. Whether you're navigating city streets, exploring trails, or setting up a live stream, this handlebar clamp mount offers integration into your active lifestyle. Enhances your ridings experience with this essential accessory, to provide a universal fit for most phone holders and ensure device stays accessible and secure during any adventure. Specifications: Material: Plastic Size: About. 8.2x4.2cm/3.23x1.65in Package Includes: 1pc Handlebar Clamp Mount Base note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.