Carmex Thread Mills Carbide Mini Type - UN (UNC UNF UNEF UNS) - 1/2 x 13 - MT7The Carmex Thread Mills Carbide Mini Type is a high precision threading tool designed for deep hole work, capable of producing both internal and external threads with speed and accuracy. Ideal for machinists and engineers who need reliable performance across a range of materials and thread pitches. Size: 1 2 x 13 UNC UNF UNEF UNS threading with MT7 tool holder interface Material and grade: Sub micron MT7 carbide for exceptional rigidity and wear