The product is an assortment of 800 pieces of 9 different sizes of 304 stainless steel flat washers and fender washers. Manufactured by Kindroufly, the washers come in a compact size of 3.6 x 0.72 x 5.2 inches and weigh 10.86 ounces. This assortment is designed to provide a variety of sizes to suit different fastening needs, making it a convenient and versatile option for various projects.