The Vevor 51-piece metric tap and die set is designed for cutting new internal and external threads, cleaning old threads, and repairing stripped threads. Made from high-carbon chrome bearing steel, it offers strong hardness, wear resistance, and reliable cutting performance for repeated use. The set includes coarse and fine thread taps and dies, along with essential hand tools and accessories for efficient operation. It works with a wide range of metals including carbon steel, cast iron, aluminum alloys, brass, copper, and stainless steel. A lightweight PE storage case keeps all components organized for storage and transport.