Steel ball ammunition for slingshots and catapults. Round steel balls fly straighter and more consistently than stones because every ball has the same size and weight, which makes it easier to group shots and improve your aim. They are used for target practice at tins, steel targets and catch boxes. Steel can bounce back off hard surfaces, so always shoot at a soft backstop or a proper catch box, wear eye protection and make sure no one is behind the target. Store the balls dry to stop them rusting. Ball size and quantity were not stated in the supplier line, so check the pack before buying for a specific slingshot.