Carmex Thread Mills Solid Carbide - Internal Thread - Metric - M9 x 1 - MT7Carmex MT thread mills deliver precise internal threading in metric form, specifically M9 x 1, with an economical approach that suits busy workshops and production runs. Built for reliable performance, this MT7 class tool helps you form accurate threads with reduced cycle times. Tool type: Internal thread milling tool designed to create metric threads (M9 x 1) in bore holes. Flute count: 35 flutes for stable cutting, efficient chip evacuation, and