#1	The inner diameter of the tube rings is 90 mm for Telescopes between 63 to 89mm tube diameter can be mounted adjustable
#2	The adjustment screws have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping
#3	Solid metal finderguide scope rings for compact Finderscope or Guidescope with knurled metal screws Big screws with maximum grip allow easy use even with gloves
#4	Syntastyle dovetail mounting bar it has two M6 throughholes on both sides for easy adaption to rings and three threaded throughholes the center hole has 14inch 20 threads and the two larger holes on either side of center have M8 x 125 threads
#5	Set pair of two tube rings made of metal the Astromania guide scope rings are suitable for small and mediumsized guiding telescopes eg Astromania 70mm Compact Deluxe Finder and Guidescope Kit ideal for astrophotography for mounting a guide scope parallel