Irwin 9742 Hanson 12mm-1.25 Thread 1" Hexagon Metic Die (HCS) - Ideal for automotive repair and machinery where metric threads are specified. 1" across flats. Ideal for maintenance and repair work. Recommended for use with hexagon die stock. Die can be used with a wrench or socket when space is limited. Advanced die geometry: Allows for faster cutting with longer life. Material types: High carbon steel (HCS) for cutting of external threads by hand. Etched: Die size is etched on each tool for easy identification.