① The head part will be symmetrical so you can finish the surface without making a ridge pattern on the leather surface when you hit the tool repeatedly.
The head part has a sharper pitch than the conventional tool, so you can hit in much narrower places and also it’s OK with places where cutting lines are closer.
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② Engraving tool number and “MADE IN JAPAN”.
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③ Whole tools are plated.
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④ Knurling the body part makes it nonslip when you use it.