Follow up:
So I recently tried setting one of the Griplock straps on my wife's new backplate.....it was ridiculously long, and I was kind of confused. They were way too long to use with a 12L or AL80 size tank.
I did some research for info about the wrapture vs non-wrapture version and could not find any info on actual length other than the non-wrapture version is longer.
I was in a shop this afternoon that had some griplock straps hanging on the wall and inquired....they pulled out their supplier's catalog and pointed to a version of the griplock for twinsets and thought maybe that what these were for....but I don't think that is what these are, as this video from Simply Scuba indicates that is not what I have:
The straps I have are approximately 51 inches long. Here is a picture of one of them laid out with a ruler:
View attachment 607945
Anyone have any ideas about these? or know how long the non-wrapture griplock straps are supposed to measure?
-Z