Ideal for tripods, selfie sticks, live streaming rigs, phone mounts, and action cameras, it particularly suits users requiring flexible device positioning on the Available in four lengths: 21cm / 32cm / 42cm / 52cm Flexible 17mm Ball Head to 1 / 4 " external thread adapter rod for tripods, selfie sticks, live streaming mounts, phone holders, and action cameras Constructed from and aluminium alloy, this adjustable angles adapter ensures long-term durability and compatibility with all 17mm mounting systems Whether navigating city streets or live streams, its 360-degree rotation allows effortless device for optimal viewing angles This 17mm to 1 / 4 " external thread composite ball adapter enhances your mounting setup, designed for seamless integration with industry-standard double ball socket mounting arms