2pcs American tap die set 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1inch, used for machine tool internal and external thread tapping 

2pcs American tap die set 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1inch, used for machine tool internal and external thread tapping 

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