86pcs Tap and Die Sets SAE & Metric Threading External & Internal Threads

A tap and die set is designed for processing, correcting or cleaning external and internal threads, providing smooth and precise thread cutting operations. The threading tool sets are made from high hardness alloy steel, providing strong strength in re-threading hard materials like metal and creating new threads in soft materials such as plastic. The cutting teeth of the tap & die set are manufactured with precision CNC machining techniques and heat treated, ensuring precise dimensions and increasing hardness and sharpness, resulting in clean and accurate threads. The coating surface of metric tap and die set is wear resistant and rust resistant which can help to extend the service life.