The Baer Circular Die HSS - UNC Left Hand, 9/16 x 12 is a precision external threading tool designed for general-use projects. Built for machinists, fabricators, and DIYers, it delivers clean, reliable threads on cylindrical stock with minimal effort.

• Material: High-Speed Steel (HSS) construction for durability and long edge life in a range of metals.
• Thread Type: UNC left-hand threads, specifically 9/16" diameter with 12 threads per inch for compatible fasteners and assemblies.
• Size: 9/16" major diameter with 12 TPI, suitable for standard UNC applications.
• Design: Circular die with precisely ground cutting edges to produce smooth, accurate threads every pass.
• Usage: Intended for use with a die holder or die stock to ensure controlled rotation and consistent cutting pressure.
• Applications: Ideal for general threading tasks, repairs, and fabrication where external threads are required on cylindrical stock.

With the Baer circular die, you gain predictable performance, durable cutting edges, and the ability to create dependable threads that fit mating parts precisely. The left-hand configuration is suited for specialized assemblies and counter-threading scenarios, while the robust HSS body stands up to repeated use in workshop environments. When paired with the right die stock, it helps you achieve clean thread profiles, reduce rework, and complete projects with confidence.