The inner diameter of the tube rings is 69 mm for Telescopes between 43 to 68mm 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 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 one center hole with ¼"-20 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 50mm Compact Deluxe Finder & Guidescope Kit. Ideal for astrophotography for mounting a guide scope parallel to the main telescope.