Kats'N Us Cat Wand Refill - Red Bug Fly KatFly Red Bug Cat Wand Refill. Body is about 1 inch, whole toy is about 2 inches lots of color! Replacement / Refill for Top Selling Cat Teaser Wands. Made of Deer Hair and Real colorful feathers. Jumps around on your Cat Teaser like a bug! Adds Variety to Cat Wands and brings out the natural hunting instinct Reccomend supervised play time with cats and this toy!