Design Universe Quad lock compatible ring holder  . 

Designed to allow you to hold your phone securely and comfortably with your finger.

Very low profile , only 3.5mm high

The ring is 3mm thick and inner diameter 28mm. The mount can be used as a phone stand or with magnetic car phone holders. 

please see my other quad lock compatible items

NOTE: this item is not affiliated with Quad Lock trade marked brand.