William Optics 90mm Two Ring Mounting Set for 80mm Refractors - Black | OPT Telescopes
ASToptics 80MM CNC TUBE RINGS (TAK FS-60) (Pair)
PrimaLuce | OPEN BOX 80mm PLUS Support Rings – Cloud Break Optics
William Optics 90mm CNC Tube Rings | First Light Optics
ASToptics 80MM CNC TUBE RINGS (TAK FS-60) (Pair)
PrimaLuceLab Tube clamps PLUS 80mm
80mm Tube Rings(pair)/ | eBay
William Optics Mounting Rings (Set of 2) - 90mm (3.54")
Hutech Astronomical Products - Borg Telescopes and Components
7085 – BORG Mounting Ring for BORG Series 80 (piece) – Hutech E-store
Telescope Guide Tube Rings with Mounting Plate - Short Type - Walmart.com
Astromania Adjustable Guiding Scope Ring Set with Plate - 80 mm inside diameter (pair) - for telescope tube
Amazon.com : SVBONY SV116 Guiding Scope Ring Kit for Telescope Tube Diameter or Finders 43mm to 70mm with Pair Ideal for Astrophotography : Electronics
Tele Vue Mounting ring set for 4" refractors | Astronomics.com