ZWO 2" nosepiece with M54 male threads. M54x0.75 male thread on one side and a 2" barrel with M48x0.75 female thread on the other side. Can be used as a 2" nosepiece with ZWO and other larger cameras that have M54 threads. Allows use of 2" astronomy filters at the bottom of the nosepiece. Made of black anodized aluminum.
The ZWO ADC actually does work well. It takes a bit of practice and some searches through the internet on how to use, but if planets are low in the sky the ADC will provide a better image.