This is a TPO 50.8mm (2 inch) to T2 (M42) / 31.7mm (1.25 inch) eyepiece adapter.
It's an older model, thin-walled with a smooth, CNC-machined feel when attaching and detaching. The T2 thread on the eyepiece side allows for direct camera shooting via a T-ring.
(The specifications of a similar Taiwanese GSO model with a different logo mentioned CNC machining.)
This model features two thumbscrews, a compression ring, and a safety groove to prevent accidental drops.
○ Condition
Usable condition. Please check the photos for details.
○ Set Contents (Everything shown in the photos is included)
Main unit
○ Delivery Time
As I may be away, the delivery time is shown as a range. Please comment to confirm the actual shipping availability.
○ Notes
No claims or returns accepted (NC/NR).
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.
I’ve been using the product for a while now and it continues to work well. Everything functions as intended and I haven’t noticed any problems.