Prime Time Toys Max Liquidator Hydro Blaster Pro - Colors May Vary The Hydro Blaster Pro is the ultimate water shooter disguised as a foam swim aid. The Hydro Blaster measures 13 inches long and 3 inches in diameter. Pull back on the end piece of foam and suck up a load of water and take aim! The water stream that shoots out when you power forward reaches across the entire lenth of a backyard pool at over 30 feet. Prime Time toys mission is to be your resource for active fun, whether that's in the pool or backyard.