Astromania Adjustable Guide Scope Ring Set with Plate 90 mm Inside Diameter

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About

The inner diameter of the tube rings is 90 mm for Telescopes between 63 to 89mm tube diameter can be mounted adjustable
The adjustment screws have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping
Solid metal finder-guide scope rings for compact Finderscope or Guidescope with knurled metal screws. Big screws with maximum grip allow easy use - even with gloves.
Synta-style dovetail mounting bar; it has two M6 through-holes on both sides for easy adaption to rings; and three threaded through-holes: the center hole has 1/4inch - 20 threads and the two larger holes on either side of center have M8 x 1.25 threads
Set: pair of two tube rings made of metal; the Astromania guide scope rings are suitable for small and medium-sized guiding telescopes eg; Astromania 70mm Compact Deluxe Finder and Guidescope Kit; ideal for astrophotography for mounting a guide scope parallel to the main telescope