¿¿ï«M4¥»¥ì¡¼¥È¥Ê¥Ã¥È¡Ê5pcs) ÈÆÍÑ¡¡Brass M4 serrated nut (5pcs)
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It is about 3 times heavier than the aluminum M4 serrate nut. A special black dyeing process wa...