Hercules® 20211 Clobber Drain Cleaner, 1/2 gal

Hercules® Clobber® Drain and Waste System Cleaner, 0.5 gal Container, Jug Container, Liquid Form, Dark Brown, Pungent Sulfurous Odor/Scent, 0.9 pH, Composition: 96 to 98.5% Sulfuric Acid, 5 to 10% Water