Features:\n\n- To increase the distance between the lens and the image plane for macro photography.\n- Contains 3 intermediate rings with 10, 16 and 21 mm\n- The rings are to be mounted individually or in any combination.\n- High-quality all-metal design\n- All rings are provided with goldfingers that continue all the information from the camera to the lens. The autofocus works at close range.\n- Suitable for all Sony E cameras. (Not for Fully Format - models like A7 etc.)