It takes time to get parts correct.
First, there are CAD drawings created, modified, etc. Then moulds have to be made, The moulds take a couple months on average to produce. Then parts have to be produced and tested from the moulds which also takes a couple months and usually once you have parts, they need modifications and tested again.
So even though we are rushing to get them done as quickly as possible, they have to be thoroughly tested and we have to wait on other production aspects out of our control.
We do have the first test parts in but they needed to be modified and we are waiting for the new version.
There are still many other stretches you can perform with the SIliStretcher as it stands right now that are just a beneficial (if not, better) than a traction add on.