G NPT 55 °/60 ° HSS pipe thread tap 1/8 1/4 3/8 1/2 3/4 1 inch 2 inches, used for internal thread tapping tools in water pipes

G NPT 55 °/60 ° HSS pipe thread tap 1/8 1/4 3/8 1/2 3/4 1 inch 2 inches, used for internal thread tapping tools in water pipes

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