High-Quality Left-Hand Thread Tap Die Set – M3 to M20 HSS Metric Hand Tap with Straight Flute for Precision Screw Threading

This premium left-hand thread tap die set is designed for professional and DIY users who require precision in threading applications. Made from high-speed steel (HSS), this durable hand tap features a straight flute design for smooth, efficient cutting and reduced chip buildup. Ideal for creating internal threads in metals such as steel, aluminum, and brass, it supports multiple metric sizes including M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, and M20. The left-hand threading direction makes it perfect for applications where reverse-threaded fasteners are needed, such as in pipe fittings or specialized mechanical assemblies. Easy to use with standard tap wrenches, this tool ensures clean, accurate threads every time.