My genuine slipper didn't come with them, yours are the 1st I have seen apart from brochure pictures. I had to buy some EVR ones, and even then I had to get them from the USA.
That looks very much like the stm evolution clutch , although its not very new , I bought mine in 2008 . Still going strong now no breakages although they do like to eat plates. Oh and they require a dedicated tool to take them to bits . Mine was £130 back in 2008 the clutch with 48 tooth basket was over £1100 .