Get more bang for your buck shots! The Umarex Big Blast Caps turn any standard plastic bottle into an exploding target. Fill up a bottle with any liquid, attach one of the reusable caps and inflate to the peak pressure point. Shoot it with your choice of projectile and watch the bottle rip apart with a satisfying BOOM! The package includes ten caps, a net bag to secure bottle fragments, and two inflation needles compatible with any standard air pump. Features: Material: injection molded polymer