The Vevor 7-piece lathe turning tool holder set is built for turning, grooving, threading, and cut-off operations on metal lathes. It features high-quality steel tool handles with a nickel-plated finish and hard alloy blades with a TiN coating for durability and corrosion resistance. The set is designed for semi-precision and rough machining of steel and other metals. An upgraded aluminum storage case keeps the tools organized, protected, and easy to transport. Size markings on the case help speed up tool identification and setup.