3/8" (9.5mm 10mm) Catapult Slingshot Ammo Steel Ball Bearings - Pack of 1000
3/8" Catapult Slingshot Ammunition (Actual Size: 9.525mm). 1000 pieces 10mm - Catapult ammo Grade 1000 UHC. These are widely used in non precision applications and more commonly as catapult ammunition.