Uxcell 2Pcs Tap And Die Set, 9/16-18 Unf Left Hand Thread Tap Round Die, 1pcs Thread Tap: 1pcs Round Die: Descriptions: Tap and Die Set: Thread Size: 9/16-18 UNF (Left Hand); Tap Square Shank Width: 9mm / 0.35"; Tap Thread Length: 31mm / 1.22"; Tap Total Length: 95mm / 3.74"; Die Outside Diameter: 38mm / 1.5", Die Thickness: 14mm / 0.55" Widely Used: Accurately cut, repair or clean threads. Straight flute tap process through or shallow blind holes and remove chips downward. Die is suitable for threads on rods, bolts, screws, pipes and shafts, or just remove bolts and threaded rods. Great for most metals, iron, copper, zinc, alloy steel, abrasive steel, stainless steel, etc.. Features: Tap die with clear threads without burrs, left hand tapping direction. Thread die designed with conical lock hole, strong locking force and no loosening. Uncoated tools feature just the base substrate, great for a wide range of applications. Reliable Material: 6542 high-speed steel taps offer high hardness, good toughness, wear resistance, and excellent cutting performance. 9SiCr alloy tool steel die provides excellent hardness, toughness and wear resistance for durability. How to Use: Die is used with die stock wrench (not included). The fastening screw in the middle of the wrench should be inserted into the slot of the die and tightened .Machine tap is used in drill presses, tapping, CNC and milling machines. Apply appropriate cutting lubricant or oil for higher quality threads and more durable tools.