16MM 5/8" CATAPULT / SLINGSHOT AMMO STEEL BALL BEARINGS are high-quality steel ball bearings designed for use in catapults and slingshots. Manufactured by 4BEARINGS in the United Kingdom, these bearings provide durability and precision for your ammunition. Choose the quantity that suits your requirements for a smooth and accurate shooting experience. Perfect for hunters and sporting goods enthusiasts looking to enhance their catapult or slingshot performance.