Carmex Steel Toolholder With Internal Coolant For CMT Inserts - SRC1610GVertical milling indexable inserts and tool holders to perform a wide variety of threads, grooves, chamfers and more. Advantages of CMT Vertical Mill Thread: Ground profile inserts for high precision and excellent performance. Working at high machining parameters, with high surface quality. Solid and accurate clamping method enables full repeatability. Same insert for right hand or left hand threads. Toolholders include weldon shank and coolant bore.