The ASSORTMENT-THREAD NUT INSERTS includes 735 pieces made from durable steel, featuring large flange ribbed designs suitable for #6 to 3/8" applications. These inserts provide superior grip and stability, making them ideal for a wide range of automotive and industrial fastening tasks. Their ribbed construction ensures a secure hold in various materials, enhancing reliability in critical installations. This assortment is an essential addition to any professional toolkit, ensuring you have the right insert for every project.