The Opticron UTA Connection Ring is designed for use with eyepieces with diameters between 50 and 49.5mm. It features a lightweight aluminium alloy construction, ensuring durability without adding excessive weight. The ring has a screw thread connection to the UTA body and a push-fit connection to the eyepieces, making it easy to attach and detach. With a maximum internal diameter of 49.5mm, it offers a secure fit for compatible eyepieces, providing a seamless and reliable connection for your optical equipment.