Specifications:Machine Tap:Thread Size: M6 x 1mm; Thread Style: Left Hand; Thread Length: 23mm / 0.91"; Overall Length: 73mm / 2.87"; Square Shank Size: 5mm / 0.2"; Material: High Speed Steel (HSS); Accuracy: H2Round Die:Thread Size: M6 x 1mm; Thread Style: Left Hand; Outside Diameter (OD): 20mm / 0.79"; Thickness: 7mm / 0.28", Material: Alloy Tool Steel (9CrSi); Accuracy: 6GPackage Included:1 x Left Hand Tap and Die Set (1 x Machine Tap, 1 x Round Die)Descriptions:1. Tap and die set are suitable for making or repairing male and female threads, good for general purpose applications. Tap and die are both right hand thread.2. Can be used to process through holes in maintenance and repair work. Great for drilling and tapping alloy steel , die steel, cast iron, ferrous and non-ferrous materials etc..3.