Description: brand new and high quality Feature: Made of high-quality aluminum alloy body and rubber for head, durable, wear-resistant and has a long service life. 360 degree rotary, anti-shock and stable, easy and simple to install and operate. Compatible for: For Gar-min navigator, For go-pro camera. You can use it with other accessories for mobilephone, for camera etc. With 1" or 1.5" rubber ball allows for connection to any size double socket arm. Ball and socket technology allows for near-infinite adjustability. You can freely adjust the angle, simple and easy to install and operate. With a small shape and compact size, it is easy and convenient for us to take and carry. Specifications: Item Type: Ball for Head Mount Material: aluminum alloy+rubber Size: As shown Color: Black Optional Type: A: 1inch ball for head, B: 1.5inch ball for head Quantity: 1 PC Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Ball for Head Mount (other accessories demo in the picture are not included!)