Compatibility: The M8 x 1.25mm left hand metric tap and die set is designed for manufacturing or repairing male and female threads, suitable for general purpose applications and meeting standard processing requirements.Applications: Ideal for hole processing in repair and maintenance work. Excellent for drilling and tapping alloy steel, tool steel, cast iron, and various ferrous and non-ferrous materials.Features: The steel screw tap delivers high hardness and toughness for enhanced wear resistance. The alloy steel round die provides strong abrasion resistance. The tap and die set is sharp, durable, and built for long-term performance.Easy to Use: Round dies are compatible with a standard die wrench (not included). Insert the fixing screw of the wrench into the die slot and tighten securely. Machine taps can be used with drill presses, tapping machines, CNC machines, and milling machines.Tips: For best results, use with tapping oil to produce high-quality threads and extend tool life. Apply appropriate lubricating oil to the cutting edges of taps and dies during operation.