Excellent quality M48 male thread to 2-inch nosepiece barrel adaptor for CCD cameras This CNC machined and black anodised nosepiece attaches to the female (M48) camera threads to provide a 2 -inch nosepiece with 50mm pushback. - Flat seating for accurate connection to telescope visual back - 2-inch (50.8mm) barrel - Threaded to take standard 2-inch (50.8 x 0.75mm) filters