Material: aluminum alloy
Size: outside diameter 70mm, inner diameter 57mm.Length：75-90mm
The other end of the product is the M42 universal camera interface (42mm thread), it needs to purchase a 42mm threaded port camera adapter ring, combined use
For eyepiece with a diameter under 57mm.
For CANIS LATRANS Spotting Scope
20-60x85 APO Spotting scope CL26-0016
25-75x95 APO Spotting scope CL26-0017