Feature:1. Wide Applications: The 1 or 4 inch to 17mm ball vertical mount adapter is used for tripod selfies, handle brackets, ball head phones, tablet clips, cradle clips, bracket connectors.2. Selfie Stick and Camera Bracket: The 1 or 4 inch to 17mm ball vertical mount adapter is compatible with tripod selfie stick and camera bracket, with 1 or 4 inch mounting screws, ball diameter is 17mm, can accommodate 17mm ball head installation.3. Anodizing Treatment: The aluminum alloy 17mm ball head bracket base adapter adopts anodizing treatment, which is not easy to fade, stable, reliable, and durable.4. Flexible Installation: The 1 or 4 inch to 17mm ball joint adapter bracket can be installed on any bracket that can accommodate a 17mm diameter ball, with a 1 or 4 inch spiral interface5. Exquisite Beautiful: 1 or 4 inch to 17mm ball vertical mount adapter for tripod selfie, with exquisite workmanship, beautiful appearance, small portable size.Specification:Item Type: 1 or 4 Inch To 17mm Ball Vertical Mount AdapterProduct Material: Aluminum AlloyWeight: Approx. 35g or 1.2oz.Package List:1 x 17mm Ball Head Bracket Base Adapter