Advanced die geometry: Allows for faster cutting with longer life. Material types: High carbon steel for cutting of external threads by hand - high speed steel for longer life. Etched: Die size is etched on each tool for easy identification All Hanson taps and dies are made in USA Best suited for maintenance and repair work Ideal for automotive repair and machinery where metric threads are specified. Recommended for use with hexagon die stock In areas with limited space, die can be used with a wrench or socket.