TPO M42 Spacers Extension Rings 10mm
This is an M42, also known as a T-Thread or T-2 Extension. This one is 10mm.
Manufacturer Product Number: M42-10
|Accessory Type||Adapters & Extensions|
|Ring Size||42mm with 10mm Extension|
|Warranty||2 Year Warranty|
The item is anodized, but much more reflective than the spacers that came with the focal reducer I plan to use it for. I probably can fix it by spray painting the inside, but still it would be better if manufacturers make these things not so reflective.