Set of 9 metric left-hand thread dies made from hardened alloy steel for metalworking and mechanical maintenance tasks. Durable, wear resistant construction provides long service life for frequent use in professional shops and field service. Left-hand thread design enables cutting, renewing, or repairing left-handed fasteners and components with precision. Suitable for a wide range of metalworking tasks that require metric left-hand threads. Designed for precision and reliability in mechanical maintenance work. Use scenarios - Servicing equipment with left-hand threads such as gearboxes, conveyors, or pumps during routine maintenance or repair work. The set allows accurate cutting or renewing of left-handed threads to restore proper fit and function. - Fabrication or retrofit projects where left-hand threaded connections are required. Use the dies to create new left-handed threads on replacement parts or coupling components to meet design specifications. - Assembly and maintenance of hydraulic or pneumatic systems that utilize left-handed fasteners. The dies support precise threading to ensure secure connections and reliable performance.