For some reason, the topic of length came up here and on another forum where the shackles are displayed for other eyes to see... This obviously needs addressing and I, not being a cheap politician, will not take the long way around and will absolutely answer your concerns right now !
They should be the same length as the ones you got from me, since I try to make them as identical as possible.
To go deeper in the explanation, I'll go about it the same way I tell the women who get to enjoy my nightly company : "Don't get fooled by the first look at this appendix ! Right now it's pretty soft and doesn't look that big, but wait until you've tugged on it good a few times and I'll promise, it'll grow !" The material is pretty stretchy, and pulling on it will definitely help seat the knots and give it a few more inches.
Continuing the metaphor, I'll attract your attention to the fact that once the
legs tires are up in the air, it'll get the job done ! And nobody will judge, as she'll go around telling how good of a job you did with the aforementioned appendix, I can guarantee.
Proof being in the pudding, I'll post below a picture of one of these shackles. Mid-use. I know it can be crude, but I will fight for the people to know the truth, and sometimes, the raw truth can be messy ! As you can see, they'll neatly wrap around a 90deg joint on my buggy's cage. Said cage is made of 2" DOM and, you'll agree with me, I bet, is on the larger side of things.
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In order to keep me from lying, I'll will use the science and technical accuracy that the vast array of tooling present in my shop enables me to provide to this assembly ! I used the finest Amazon $20 micrometer I have, and after sending it to China for accurate calibration (don't want to make such a rookie mistake !) and about 12587.69 measures (I had to make sure I used the weighted average length of each strand of rope), I can confidently said the overall ID of this magnificent blue ring is right 'bout 125mm. Which, in more common measurements could be rounded down to 0.135 yards.
That's before stretching, obviously !
If, after buying, you are not satisfied by the product, and it feels like a way too tight, cheap cock-ring around whatever you're trying to use it and before you actually get to tug on it, please contact me and I will make sure to find a satisfactory resolution.
I can also take custom length orders, but they'll come at a premium and will require pictures and measurements of the HUUUUUUUUUUUGE contraption you're trying to pull with it.