3 spare fingers (the middle section) for your posable MP Seeker hands. I did this as that piece is the most fragile of the model, prone to snapping at the joint if you are not careful during assembly. This only applies for Frosted Ultra Detail.
I am not earning any profit from this. I just want everybody to have a perfect set of hands.
Oh, and the MP Seeker hand model already includes 2 spare finger pieces. This model is for the extreme emergency.