Aluminum Drill Base. 20mm Ball Connection. 1.5" distance between holes. 1.7" height. 2" diameter base.
Tack form has the best customer service I’ve encountered, especially during the Covid issues. Thank you.
It’s a steel ball, and hard as a rock. Great for At bounce.
Nice quality tuff construction
Using these mounts for phone and gps on my adv bike. I move the phone holder from bike to bike.