Thread Tap: 
Thread Size: M4 x 0.7; Thread Length: 20mm / 0.79"; Overall Length: 55mm / 2.17"; Square Shank Size: 3mm / 0.12"; Cutting Direction: Left Hand; Accuracy: H2; Material: High Speed Steel 6542
Round Die:
Thread Size: M4 x 0.7; Outside Diameter: 20mm / 0.79"; Thickness: 5mm / 0.2"; Cutting Direction: Left Hand;  Material: Alloy Tool Steel (9SiCr)
Drill Bit:
Cutting Edge Diameter: 3.3mm / 0.13"; Cutting Edge Length: 30mm / 1.18"; Total Length: 60mm / 2.36"
Material: M35 Cobalt High Speed Steel (HSS, 5% Cobalt)
Package: 1pcs x Thread Tap, 1pcs x  Round Die, 1pcs x Drill Bit

Descriptions:

1. Tap and die set are suitable for making or repairing male and female threads. They are both left hand thread, durable, and with clear threads, good for general purpose applications.
2. Straight flute design, downward chip removal. Process through holes in maintenance and repair work. For tapping aluminum, die steel, stainless steel, bronze, hard plastics etc.. Use with tapping oil to get higher quality threads and more durable taps. Machine taps are used on drill presses, tapping machines, CNC and milling machines.
3.  The round die features good abrasion resistance. Features just the base substrate without any coatings. Suitable lubricating oil should be added to the cutting edge. Used with die wrench (not included). The fastening screws in the middle of the wrench should be inserted into the slot of the die and tightened.
4. Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. M35 cobalt high speed steel tool features high hardness (HRC65-66) and high red hardness, high wear resistance. Specially used for drilling stainless steel.