Baer Circular Die HSS - BSP - Left Hand - For General use - 1/2 x 14The Baer Circular Die in high speed steel (HSS) is a reliable tool for cutting external BSP threads on cylindrical stock. Designed for general use, this left hand die is ideal for machinists, plumbers, and fabricators who need consistent, clean BSP threads on 1 2" diameter stock with 14 threads per inch. Material: High speed steel (HSS) for long lasting cutting edges and durability. Thread Standard: BSP external threads, suitable for standard piping