Spiral Flute Tap:
Thread Size: M12 x 1.75; Thread Length: 30mm / 1.18"; Overall Length: 89mm / 3.5"; Square Shank Size: 7mm / 0.28"; Accuracy: H2; Material: High Speed Steel (HSS) 6542; Finish: Nitrogen Treatment; Type: Machine Tap

Round Die:
Thread Size: M12 x 1.75; Outside Diameter (OD): 38mm / 1.5"; Thickness: 14mm / 0.55", Material: Alloy Tool Steel (9CrSi); Finish: Uncoated

Package Included:
1 x Tap and Die Set (1 x Machine Tap, 1 x Round Die)

Descriptions:Tap and die set are suitable for making or repairing male and female threads. They are both right hand thread cutting, with clear threads, good for general purpose applications.
Used for processing holes and sticky materials. For tapping stainless steel, alloy steel, cast iron, ferrous and non-ferrous materials etc.. Use with tapping oil to get higher quality threads and more durable taps and dies.
Spiral flute design, upward chip removal. High speed steel tap has high hardness, good toughness, wear resistance. Black nitrogen treatment greatly improve wear resistance, corrosion resistance and high temperature resistance. The round die features good abrasion resistance.
Round dies can be 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. Machine taps are used on drill presses, tapping machines, CNC and milling machines, and suggested to be used with tap collets with overload protection.
Recommended feed rate: general steel: 6-15m/min; harder steel: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min. The torque caused by too fast feed speed is too large, which can easily cause the tap to break.