Phone Skope's optic adapters are one of two required pieces. These adapters are made out of ABS plastic and locks into the Phone Skope phone case and slides over the optic eyecup, creating a secure fit. Designed to fit your scope for a perfect fit when digi-scoping. Select the appropriate adapter for your optic and connect it to your PhoneSkope Case for either an iPhone or Samsung mobile device. Start capturing stunning images straight away with your new set-up.