A genuine Louet replacement threaded rod with knobs for the S90 spinning wheel, supplied as one model-specific service part.
Please check that your wheel is an S90 and match supplier code SR0145 before ordering. This is a replacement component, not a complete lazy kate or wheel assembly.
If this item is not currently on the shelf, you can still order it through my website. I will order it from Louet especially for you, let you know the expected timescale and keep you updated while it is on its way.