Features: brand new and high quality 360 degree universal rotation ball for head, easy to adjust the angle. Easy to operate and simple to install and assemble. It is suitable for motorcycles, scooters, motorcar, pull car and other vehicles. It is suitable for phone holder, camera holder, recorder holder and other DIY use. Made of high-quality aluminum alloy materials, durable, firm and shock-proof to use. Specifications: Material: Aluminum Alloy Color: Black Dia:Approx. 17mm/0.67 inches 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. Package includes: 1x Ball for Head Adapter