Received the blades and sealed them. Eventually I also got an additional k9 (ebony, 7 wood+2 carbon), although not same structure it was at a discount.
The k9 came in at 92g, the k10 (rosewood, 5 wood+2 carbon) at 88g, the k11 (walnut, 5 wood+2 carbon) at 91g.
Now checking if I have 3 identical...