Carmex Thread Mills Solid Carbide - Internal Thread - Metric - M12 x 1.75 - MT7Carmex Thread Mills Solid Carbide Internal Thread Metric M12 x 1. 75 MT7 is a precise, cost efficient solution for creating internal metric threads in a single pass. Built for CNC milling setups, this MT7 thread mill helps shops achieve consistent thread quality with economical operation. Solid carbide construction: Delivers exceptional wear resistance and long tool life for demanding threading tasks. Internal metric threading: Engineered specifically