Invisible fragments are uncommon items which have a 10% drop rate from camo bloons. 10 of them can make the invisible star, allowing any tower camo detection. 100 can craft the invisible bomber, which is as strong as a 3/3 ace. Also drops bombs at twice the rate of pineapples would normally, and they have double blast radius. The camo equivalent of regtec, but this is more common and useless alone.