Description
The M42 Spacer Rings are compatible with M42 x 0.75 (T-thread) camera adapters.
Adjusts back-focus between your camera and telescope for the best astroimaging results
Kit includes 3 spacer rings of different lengths (5mm, 10mm, 30mm)
Threads to your T-Ring and T-Adapter with standard male and female T-Threads
