This metric thread cutting and tapping tool set is designed for precise cuts on bolts and screws, making it suitable for both professional mechanics and DIY enthusiasts. Key benefits - Precise metric thread cutting and tapping for accurate thread formation on bolts and screws, improving fit and reliability. - Durable high speed steel construction for long-lasting performance across a variety of metalworking tasks. - Robust build with bearing steel body and an alloy steel chuck, delivering secure grip and wear resistance. - Versatile for multiple applications including bicycle repair, furniture assembly, and mechanical engineering; also suitable for automotive and machinery work such as engine repair and building machines. 2-3 practical use scenarios - Bicycle repair and maintenance: tap or repair threads in bike components such as frames, cranksets, or seats to restore proper fit. - Furniture and metal fittings: thread metal connectors, brackets, or feet during assembly or repair projects. - Engine and machine work: repair or fabricate threads in engines or machinery components during automotive service or equipment construction.