William Optics 90mm CNC Tube Rings | First Light Optics
Teleskop-Express: TEC CNC aluminum tube clamps
William Optics Tube clamps 90mm
Nrpfell Guiding Scope Ring Kit for Telescope Tube Diameter or Finders 43mm to 70mm for Astrophotography: Amazon.co.uk: Electronics & Photo
Amazon.com : Astromania Adjustable Guiding Scope Ring Set with Plate - 80 mm Inside Diameter (Pair) - for Telescope Tube Diameter or Finders 53 to 79mm : Electronics
Vixen Optics Tube Rings with 90mm Inner Diameter (Pair) ES2664
S8233 Optical Telescope Tube Ring 114MM (Pair)| | - AliExpress
Lunatico Tube ring clamps, 80mm, for 18mm DuoScope One-T counterweight rod
1Pair Tube Ring Clamp for CELESTRON 80DX 90EQ Astronomical Telescope Accessories | Lazada PH