Kestros

The kestros is an oddly shaped Bronze Age sling used for launching kestros darts. Your Strength modifier applies on damage rolls when you use a kestros, just as it does for thrown weapons. You can fire—but not load—a kestros with one hand. Loading a kestros is a move action that requires two hands and provokes attacks of opportunity. Halflings treat the kestros as a martial weapon.