The part number is ET10. The size is #10 to 3/8" You will get all with your order as shown. This is military surplus and will have markings as shown.
Helicoil Extracting Extractor Tang Break Off Tool ET10 USA
2 Helicoil HC Extracting Extractor Tang Break Off Tool 1227-6 USA #10 to 3/8"
Coil-Sert Extracting Extractor Tang Break Off Tool EX227-6 #10 To 3/8" USA
Bolt Extractor Set for Extracting Stripped Nuts Broken Bolts and Damaged Screws
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Useful M14x1.25mm Fit for 14mm Spark Plug Helicoil Thread Reamer Tap Repair Kit