The product is a lot of five 1/4" square x 2-1/2" cobalt M35 tool bits. These tool bits are made of cobalt, which is a high-quality and durable material commonly used in metalworking and manufacturing. The 1/4" square shank size ensures a secure fit in a CNC machine, providing precision and consistent performance for various cutting and drilling tasks. Perfect for professionals in the industrial sector, these tool bits offer reliability and longevity in demanding applications.