The product is two Jacob's Chucks, manufactured by the well-known brand Jacob's. These chucks are designed to securely hold a drill bit or a workpiece in place during machining processes, ensuring precision and stability. Commonly used in the CNC, metalworking, and manufacturing industries, these chucks are essential for efficient and accurate workholding and toolholding. Perfect for professional businesses and industrial settings, Jacob's Chucks offer reliability and quality for various drilling and machining applications.