Doesn't work, do not buy.
The only good news about this is you can contact RAM mount and get replacement ball mounts when they wear out; in my case that was every two weeks riding once daily for 20-30 miles a day. This is a flawed system. I had it a week before the ball that holds the x-cradle on wore down and consequently my phone would flop around like a bobble head. After replacing it numerous times, and having my phone fall off my bike at 35 miles an hour, I decided to convert it to double socket arm. Again, to their benefit, RAM mount sent me out a RAM 1'' ball, RAP-B-366U, that's for a camcorder. I removed the stud for mounting the camcorder and attached it to my current tough-claw. Because it wasn't part of my original mount I purchased the double arm socket, and after not hearing back for RAM mount about exchanging my current x-grip for one with a ball mount I purchased it as well. My current system works, but in the end it cost twice as much as if I'd gone for the double arm initially. Don't wast your time on this. Still waiting to hear about a replacement x-grip, now two weeks. Guess no luck regarding that exchange, but they usually are quite expedient when answering emails. Hope this helps.
Bestätigter Kauf: JaArtikelzustand: Neu