Features: 17mm Ball Head adapters offers 10/9/8 consistency with easy carry aluminum construction for effortless accessory mounting. Featuring anodized aluminum and plastic, this strong adapters firmly connection cameras to 17mm ball head mounts without adding bulk. Perfect for vloggers, action sports enthusiasts, and content creators needing stable multiple angle setups for phones, tablets, or cameras. Use it for car dashboard filming, bike handlebars mounts, or extending photo sticks with phone/tablet holders during outdoor activity . This ball head design ensures quick consistency with interfaces and third party accessories like magnetic phone mounts. Specifications: Material: Plastic + Aluminum Size: 8.5cm in total length, 17mm in ball head Package Includes: 1xBall Head adapters note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.