Brass Knuckle Duster and MultiTool Combo for Self-Defense

Material: Brass
The most conveniently portable thumbtack is made of brass material, and it can also carry a keychain.
Size: length of about 57 mm, width of about 45 mm, thickness of about 8 mm, finger hole diameter of about 24 mm.
The surface is brushed with an aged finish!
Copper products in contact with air will oxidize and darken, non-color loss!!!!