SimpleShot Clay Ammo is ideal for inexpensive plinking and shooting in areas where leaving steel ammo behind would be a problem. Made from magnetic, biodegradable clay, these projectiles fly great without any worry about litter. Clay Slingshot Ammo that's Magnetic Biodegradable made by SimpleShot! Our clay ammo is ideal for inexpensive plinking or shooting in areas where leaving steel ammo behind would be a problem. 9mm (3/8") weighs 1.25 grams or 19.3 grains 11mm (7/16") weighs 2.35 grams or 36.25 grains Each Regular-sized bag has approximately 500 pieces, and each sample-size bag has approximately 100 pieces. Plus, our 1000-count and 2000-count offers are shipped in multiple 500-piece bags. *Clay Ammo is Made in China. Made from biodegradable clay, these clay projectiles fly great without any worry about litter. Plus, they're made with iron powder, which makes them magnetic! Due to the nature of this natural product, clay ammo WILL VARY in size, shape, and color. There will be a few odd-shaped ammo pieces, and some will discolor. This is the nature of truly biodegradable clay ammo. M113