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Due to the heavy typhoon attacked to Japan on Sep/4/2018,
Items will be shipped from Narita International Airport(NRT) or Chubu Centrair International Airport(NGO),
which normally should have been shipped from Kansai International Airport(KIX).
It may cause delay on shipment. Sorry to have kept you waiting and thank you very much for your understandings.
I broke two in one day while tapping the hole diameter 4.2 mm with the iron plate 3 mm thick. Because it is thick, it is easy to get caught, it is easy to break. Next time, I will try another tap drill.