The Lumicon Female T-Thread - 2in Female Adapter threads onto male T-Threads (42mm x 0.75mm) and accepts 2" eyepieces and accessories. Overall length is 2". It is thus a T-thread visual back for 2" eyepieces.
Applications: To use 2" eyepieces on the Lumicon 1.25" Multiple Filter Selector & Solar Prominence Filter; to use 2" eyepieces on the Lumicon 2" Multiple Filter Selector when the photographic adapter, the LF5020, is installed.
Total length = 50.9mm (2.0"); Weight = 3.4oz. Made of black anodized aluminum. Features a brass locking thumbscrew.
Manufacturer part number: LA1075