[Designed for Gel Gun] These water gels will burst when impacted, and it's made of non-toxic, environmentally friendly materials. No need to recycle bullets, the pieces will automatically evaporate and disappear without polluting. Perfect suitable for splatter ball gun to replenish. [Easy to Use] The package is tiny, so you can take the splatter ball anywhere you want.Soak the gel ball in water for 2-5 hours before you use it, they will expand to 7-8 mm. [Easy to Store] Store the water balls in an airtight container and submerge them in water, away from the elements and direct sunlight, the water bead gun bullets will last up to 3 months. [Multifunction] Not only for automatic gel gun,but also suitable for home decorations, wedding center decorations, plant decorations, tactile toys, vase filler, preschool kids activities,etc [Plenty of Ammo] 4 pack of 10000 water balls bullets,total of 40000 gel gun blaster bullets. More fun and lasting passion in the shooting games.