Features: Seamlessly connect smartphones or tablets to tripods and selfiesticks with aluminum alloy adapter featuring 17mm ball elbow joint and 1/4" male to male screw thread for universal photography gear compatibility. Engineered with a corrosion resistant aluminum alloy body and precisions interlocking screws, this 31g adapter ensures secure mounting between 1/4" camera accessories and 17mm ball head Phone/tablet brackets. for content creators, vloggers, and photographers needing stable mobile device integration with professional tripods, live streaming rigs, or car dashboards setups. for stabilizing devices during outdoor, video calls, or multiple angled shootings, enabling smooth between car mounts, action cameras, and desktop tripods. Achieve shootings configurations with 2threaded Connectors, bridging 1/4" camera screw port to 17mm ball sockets for enhanceds flexibility mobile photography and videography setups. Specifications: Materials: Plastic+Metal Length: 5.0cm Ball head diameter: 1.7cm Package Includes: 1Set 17mm Ball Head Adapter note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.