Carmex Thread Mills Solid Carbide - Internal Thread - UN (UNC UNF UNEF UNS) - 1 - 1 1/2 x 12 - MT7Carmex MT Thread Mills in solid carbide are built for efficient internal threading on metal parts, delivering precise UNC UNF UNEF UNS threads with predictable, cost conscious performance. Designed for machine shops and production environments, these MT7 tools offer reliable threading with a focus on value. Solid carbide construction: Hard, wearresistant material that maintains accuracy through extended use and across multiple jobs. Internal thread