Nothing short of perfection has been allowed to enter this bottle of .177 Caliber Black Diamond Steel BBs. Each BB has been 100% visually inspected for surface dents and imperfections, ensuring consistent quality. The smooth anodized finish on the BBs reduces friction, increasing the power of each shot. BBs weigh 5.1 grains (0.33 grams) and come in a pack of 1,500.