Check the listing for details. Hasbro Nerf N-STRIKE Mega 20x Refill New Sealed. Condition: New, Made in China. Listed at 14.00 USD. The Hasbro Nerf N-STRIKE Mega 20x Refill is a new sealed product that offers an exciting outdoor play experience for children aged 8 and older. This refill pack includes 20 Mega darts specifically designed for use with N-Strike Elite blasters, providing endless hours of imaginative and active play. Made by the popular brand NERF in 2015, this product is a must-have for fans of dart guns and soft darts. With its quality construction and exciting features, this refill pack is sure to enhance any Nerf enthusiast's collection.