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This is a ring specifically designed for female users. When the wearer is being attacked, a sharp blade will protrude from this ring in the shortest time so that the wearer protect herself and get herself out of danger.
Turn a small self-defense item into a carry-on ornament.
When the wearer is caught by a villain, she can use her thumb one-handed to pick a small knife hidden in the ring for self-defense or get herself out of danger.
Wufeng Dist., Taichung City, Taiwan