OG 3.0 Adapter Ring OG 2.0 Compatible with all double-barrel binoculars

Compatible with all double-barrel binoculars

our eyecup is built to withstand the rigors of the outdoors

Just clip in and start glassing

Fits eyepieces from 1

OG 3.0 Adapter Ring OG 2.0 Compatible with all double-barrel binocularsRequired Items for a complete system: 1. OG 3. 0 Adapter Ring 2. OG 3. 0 Magnetic Mounting Plate 3. OG 3. 0 Optic Spacer The Adapter Ring: This is the foundation of the On Glass adapter system. The spacer of your choosing will twist lock inside of this adapter. The Magnetic Mounting Plate will slide into one of the slots at the bottom of the adapter in order to properly center your phone camera on your optic.