the fingertip claws you are refering to can be found in most ninga stores
see description below
WEAPON: NEKO-TE
DESCRIPTION:
The Neko-te were usually used by the kunoichi (female ninja). The weapon is strong iron fingernails that were fastened into leather bands fitted on the fingers, and resembled claws (not like that of of the shuko, ashiko) and were also dipped in poisons. The eyes were a favorite spot for slashing.
so I went hunting for you for u.... Ebay sell them as does this company
(**URL removed - feel free to PM or email the information instead)
they not like the pic u posted tho...but they made my skin go all goose bumpy....esp as i was looking around i found out that u can use them with violet wands as well........grinz
hope this helps u