The product is a set of rare earth magnets with a round shape and a diameter of 2.7 inches. These neodymium magnets have a grade of N52 and come in a pack of 4. They are coated with rubber and shipped with fast two-day shipping. The magnets are black in color and have a weight of 1 lb each. The brand is Magnemirror, and there is no manufacturer warranty for this product.