This Drain Cleaning Water Bladder clears from 1-inch up to 6-inch drains as it expands in the drain, forcing water pressure through the clog. It attaches easily to a garden hose and is environmentally safe.Clears 1-1/2-inch to 3-inch drainsQuality Rubber ConstructionBrass fittingsAttaches to garden hoseExpands in drain to force water through clog