Description The On Glass Adapter Ring + MagTab provides a compact, universal digiscoping connection that works with your preferred phone case. The low-profile MagTab attaches to your phone using 3M adhesive, while the Adapter Ring creates a magnetic connection to a compatible Optic Spacer for fast, repeatable camera alignment. Once properly installed, the system automatically centers your phone camera with the optic each time, reducing setup time and eliminating constant adjustments in the field. ***Pair with the OnGlass OG 3.0 Spacer to complete the kit***