These 10 mm ABS balls let you hone your aim, shoot targets and generally practice shooting your Pocket Shot circular slingshot without the cost and potential danger involved with more advanced steel slingshot ammo. Their larger sizes also make them easier to grip when loaded in your Pocket Shot pouch. Each ball is iridescent orange - easy to spot almost anywhere, for less loss and litter. This handy 100-count bag provides hours of Pocket Shot shooting fun! Once you've gotten the hang of shooting these practice rounds, you can confidently "graduate" to Pocket Shot's potent steel ammo. Although these practice balls are indeed safer than steel balls, they can still inflict serious injuries if used carelessly. Use common sense, stay safe and have fun!