Carmex Thread Mills Solid Carbide - With Through Coolant - Metric - M12, M14 x 0.75 - MT7Carmex MTB solid carbide thread mills with through coolant are engineered for precise metric internal threading. Designed for production environments and MT7 spindles, they deliver reliable chip control and extended tool life through coolant assisted threading. Through coolant bore: Delivers coolant directly to the cutting edges, improving heat management and flushing chips from deep or blind holes for cleaner, more reliable threads. Solid carbide