Mexican Bimbo Star Wars Episode 3 ROTS 'Shooters' - (2005) set of 20
Backs - just showing these to match the four above
I wasn't really sure how these worked, each has a little rubber band and parts punched out of the cards
eventually I found this on www.mightyjabba.com
It's still tiny, please check out MightJabba.com for full details.