Carmex Thread Mills Solid Carbide - With Through Coolant - Metric - M10 x 1 - MT7Carmex MTB Thread Mills are precision solid carbide tools designed for metric threading on CNC mills. Built for machinists who demand reliable M10 x 1 threads with consistent quality and longer tool life, these through coolant mills deliver efficient, repeatable results. Through Coolant Bore: Coolant is delivered directly through the bore to flush chips from the hole and cool the cutting edges for cleaner, more accurate threads. Solid Carbide