Carmex Thread Mills Solid Carbide - Internal Thread - UN (UNC UNF UNEF UNS) - 1 1/8 - 1 1/4 x 7 - MT7The Carmex MT solid carbide internal thread mill is designed for precise, efficient internal threading on UN standard threads. Built for production environments, it delivers consistent results with a tool thats focused on reliability and costeffectiveness. Material: Solid carbide for excellent rigidity, wear resistance, and long tool life in demanding threading work. Internal threading: Specifically engineered to mill internal threads, enabling clean,