These hands are solid silicone and based on Mike Myers from h40 they can be modified to have all the fingers on the left hand and a different version of the knife can be substituted.
There is no additional cost to either add pvc for mounting or request a different style knife. The knife is real with a dulled down blade and is shipped loose. It can be placed in the gripping hand facing up or down A fake knife can be used as well. If no request is made these will be made similar to the pics. This product has a two week production time.