Carmex Thread Mills Mini Type - For Hard Materials - G (55 Degree) BSF BSP - G1/4, G3/8 x 19 - MT9Carmex Thread Mills Mini Type are solid carbide tools engineered for precise internal thread milling in hardened materials. Designed for shops and technicians that demand reliable performance in tough alloys, these mills deliver clean, accurate threads in tight spaces. Tool type: Mini type solid carbide thread mills with G (55 Degree) geometry for efficient, precise threading. Thread forms and sizes: Suitable for internal thread milling with sizes