Harvey's 1-1/2"x10 Yard Plumber's Abrasive Cloth with 120 Grit is for cleaning, polishing, and preparing joints for solder. Made of durable aluminum oxide, this abrasive cloth combines a flexible cotton fabric with a tough, hard abrasive for faster cleaning. It features two layers of special adhesive and water-resistant resin, ensuring consistently stronger solder joints. This plumber's roll is waterproof for maximum versatility and comes in a convenient Boxed Packaging.