The Hydro Strike Gel-Tek Bead Refills are specifically designed for use with Gel Blaster guns, like the Green Pistol model. Made by the brand Gel Blaster, these gel refills offer a velocity of 200 fps and are proudly manufactured in the United States. Perfect for outdoor play and target practice, these gel refills provide a fun and safe way for children and adults to engage in friendly competitions or simply enjoy some leisurely target practice. The high-quality materials and precise design ensure a consistent and enjoyable shooting experience for all users.