This package includes 27 Titan Fasteners, each measuring 3/8 x 1-1/2 inches and made of durable zinc plated steel. The finish of the washers is zinc, and they are designed for use in China. The brand of the washers is Tower Fasteners, and they are sold in standard gauge thickness. The system of measurement is in inches, and the type of the washers is fender washers. These washers are ideal for use in various hardware and industrial applications. They are perfect for those who need to securely fasten objects in place and ensure durability. Whether you are in the automotive industry or working with other types of machinery, these Titan Fasteners are an excellent choice.