Carmex Thread Mills Solid Carbide - With Through Coolant - UNJ (UNJC UNJF UNJEF UNJS) - 3/8 x 24 - MT7The Carmex MTB Thread Mills are high precision solid carbide tools designed for UNJ threading with through bore cooling, ideal for shops demanding tight tolerances and reliable chip evacuation. Through Coolant Bore: Coolant is delivered through the bore to the cutting edges, enhancing chip removal and cooling in deep or tight threaded holes. Solid Carbide Construction: Rugged, wearresistant body that maintains dimensional accuracy under demanding