20mm ball mount with 1/4 inch universal thread can be used to connect various camera interfaces and other ball head adapters, suitable for any device with 20mm ball head and 1/4 thread mounting pattern. 20mm ball mount is made of stainless steel and rubber, strong and sturdy, anti-slip and shock absorption, ensures higher locking force of the ball head. 20mm ball head adapter can be Installed and removed without tools, and lightweight and portable, easy to store in a pocket or backpack. Ball mount ergonomic design perfect fit for dual socket arm, tight connection with phone holder is not easy to loosen, stays smooth even when you are traveling at high speeds on rugged roads, is the cycling phone holder to best ball head base.Specification:
Product name: Ball head adapter.
Size: Ball head adapter: Overall length: 33 mm / 1.3".
Sphere diameter: 20 mm / 0.78".
Thread: 1/4".
Material: Stainless steel and rubber.
Color: Black.

You will receive:
1 pcs ball head adapter.

Notes:
1.Manual measurement, please allow slight errors on size.
2.The color may exist slight difference due to different screen displays.