Material: Aluminum oxide / tungsten steel

Dimensions: see below design

Features: EDC tool category a good tool for emergency response， simple operation， easy to carry. Before you can be compared to the market sharpener， do a better angle adjustment， not to hurt the blade. Wear a couple of buttons to repair damaged cutting tools.

Adopt HR 89 special tungsten steel hardness:

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工程结构/尺寸图；

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实物图；?

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