Borg tube ring options - is there one ??

[Telescope40]

Hello all.  Recently bought a Borg 76 Achro OTA as a G&G and am currently using a pair of guidescope rings to mount them to a dovetail bar .  Thinking from a budget point of view, would anyone know if I have any options to purchase an alternative pair of tube rings, instead of the "kosher"  Borg one's.

Regards as always   John

[Nakedgun]

Borg used to have a less costly plastic tube band for 80mm tubes, like the one pictured below, but I don't see them listed anymore on the US importer's webpage.