Features: This 1/4 screw thread to 17mm ball head adapter is a necessory for anyone looking to link various mounts together. Whether you're a professional photographer or just someone who loves taking photos, this adapter is perfect for you. It is also great for anyone who needs to mount their phone or camera in different locations. Use this adapter to link your phone or camera to a tripods, or any other mount with a 1/4 screw thread. It is perfect for capturing stable shots and videos in any setting. Made-of durable plastic, this adapter is lightweight and easy to use. With its sleek-design functionality, this adapter is sure to become a theme in your photography. Specifications: Material:Plastic Size:Approx.3.1cm/1.22inch Color:Black/White Package Includes: 1x Joint Adapter note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.