The DIE RRHS ACME 1 3/8-5 X2 1/2OD from Field Tool Supply is engineered for precision threading, featuring a size of 1 3/8-5 and an outer diameter of 2 1/2 inches. This die is constructed from high-grade materials, ensuring long-lasting performance and reliability in various applications. It is perfect for creating accurate threads on fasteners and rods, meeting industry standards for threading tools. Ideal for both professional machinists and DIY enthusiasts, this die provides the quality and precision needed for successful projects.