(500 pieces) pgn - slingshot ammo 3/8" inch (0.375" caliber) precision steel balls pgn bearings <br><b>quantity per package:</b> 500 pcs <br><br><b>diameter:</b> 3/8, 0.375 inches (9.525 millimeter) <br><b>weight:</b> 0.12529 ounces (3.5519 grams) <br><br> pgn’s 3/8" steel balls extremely precise and smooth surface guarantees you won't find any defects, such as flats, pits, soft spots, and cuts.