TPO M42 Locking Rings
This is a variable length T2 threaded extension ring. It can be adjusted between 8mm and 16mm of length freely through the rotatable bottom half. This adds a degree of versatility to your setup that is certainly valuable to an observer with several accessories to choose between.
TPO Product Number: M42-LR
|Accessory Type||Adapters & Extensions|
|Ring Size||42mm with 8mm to 16mm Ext.|
|Warranty||2 Year Warranty|
Solid and less expensive than the Stellarvue
I also got the Stellarvue 8 mm - 12 mm Variable Length M42 Extension which appears to be identical, but much more expensive. This is perfect for solidly adjusting your image train.