This is a refill pack containing 20 Nerf Ultra darts designed for use with Nerf Ultra blasters. Nerf Ultra darts are known for their advanced design, with innovative tips, wings, and made from Nerf Ultra foam, allowing them to fly even further, up to 36 meters. It's important to note that Nerf darts are compatible only with Nerf Ultra blasters, and blasters are sold separately. These darts and blasters are designed to enhance Nerf battles with superior performance in terms of distance, accuracy, and speed.