2型六角螺母 细牙 Hexagon Nuts,Style 2-Fine Pitch Thread
2型六角螺母 细牙 Hexagon Nuts, Style 2, with Fine Pitch Thread
2型六角螺母 - 细牙 - A级和B级 Hexgon Nuts, Style 2 - Fine Pitch Thread - Product Grade A and B
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