Set Of 20 Foam Water Pistol HYDRO STORM Blaster Shooter Pump. Set Of 20 Foam Water Pistol / Blaster Shooter - Swim Pool Toy. Simply immerse the water blaster fully in water - and pull the leaver back to fill. Will shoot up to 6 meters! Each water blaster is 25 cm in length, and pull out to 39 cm when loaded for blasting! Great pool fun toy - please note that the water blaster must be fully immersed in water to build up pressure. Load - ready for the next soaking! You will receive 20 water blasters per order. We also sell these in sets of 6, 8, 10 or 12 - for extra bulk buy savings! Age 5 years +.