The Original - In the summer of 2011 Knapp Made Products introduced the CM Scrubber to American kitchens. it became an instant favorite, and remains the No 1 selling chainmail scrubber in the world. The World's No.1 Selling Scrubber - Cast Iron Cookware, Dutch Ovens, Casseroles, Stainless Steel Cookware, Woks and more. Superior Quality. Lifetime Warranty. Quality First - The CM Scrubber is hand made of the highest grade food service stainless steel. Each ring is solid and strong, formed with 15 gauge, 316 grade surgical quality stainless steel. Lifetime Warranty - Knapp Made Products will repair or replace your CM Scrubber at any time for any reason. The Patented CM Scrubber™ - Recommended by Cooks Illustrated Magazine. Featured on America’s Test Kitchens.