Tap and Die Set: 1/2-28 UNEF thread tap and round die. 38mm (1-1/2inch) die stock fits 26mm-38mm / M12-M16 capacity, with adjustable screws. Suitable for making or repairing male and female threads. Good for general applications. Application: Can re-thread existing threads in hard materials like metal, or make new threads in soft material like plastic. Used to process mild steel, aluminum, stainless steel, iron, cast iron, alloy steel, and hard plastics, etc. : High-speed steel machine tap is with high hardness and toughness for wear resistance. Features just the base substrate without any additional coatings. With adjustable screws, the die stock can securely hold round dies Easy to Use: The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened. Tips: It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the of the die when tapping threads. Colour:Silver+blue Material:metal Package Contents: 1 x thread tap 1 x round mold 1 x mould handle wrench Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.