Carmex Thread Mills Mini Type - For Hard Materials - Metric - M6, M8 x 1 - MT9Carmex Thread Mills Mini Type are precision solid carbide tools designed to cut metric threads in hardened materials. Built for engineers and precision shops, these mini thread mills deliver consistent performance in tight spaces with a clean finish. Material: Solid carbide construction engineered for durability and rigidity when machining hardened workpieces (up to 62 HRc). Thread sizes: Metric threads M6 and M8 x 1 supported by the mini type design