Compatibility: M8 x 1.25mm left-hand metric tap and die set for manufacturing or repairing male and female threads, suitable for general purpose applications and transparent threads to meet processing requirements. Applications: Ideal for hole processing in repair and maintenance work. Suitable for drilling and tapping alloy steel, die steel, cast iron, and various ferrous and non-ferrous materials. Features: Steel screw tap provides hardness and toughness for wear resistance. Alloy steel round die offers good abrasion resistance. Tap and die set is sharp and long lasting. Easy to Use: Round dies are designed to be used with a die wrench (not included). The fixing screw on the wrench should be inserted into the die slot and tightened securely. Machine taps can be used with drill presses, tapping machines, CNC machines, and milling machines. Tips: Use with tapping oil to achieve high-quality threads and extend tool life. Apply appropriate lubricating oil to the cutting edges of taps and dies during operation.