Features: This is a 1/4 inch male to 1/4 inch male threaded adapter ball clamp manufactured according to international standards, with standard tripod mounting threads. Suitable for connecting various 1/4-20 screw holes, suitable for your DSLR camera configuration. 1/4 male to 1/4 male screw connection rod adjustable angles photography bracket is suitable for motion cameras, fill lights, phone clips, tablet clips, and surveillances cameras. Aluminum alloy+iron ensures safe daily use, durability, lightweight, compact structure, easy to carry and use, easy to install, and high stability. The top external thread is 1/4-20 inches, and the bottom external thread is 1/4-20 inches, supporting 360 degree rotation and used to connection other products. Specifications: Component: Aluminum alloy + iron Length: 9.2cm/3.62inch (more detail size please refer to pictures) Color: black, green, red Interfaces: 1/4 external screw Supports 360-degree rotation Suitable for use with various 1/4 interfaces camera phone clip Package Includes: 1Pc 1/4 Male to 1/4 Male Aluminum Alloy 17mm Ball Head Clamp note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.