The blade weapons on our concealed rings are big enough to cut blood vessels and strike nerve cells. Click here to view a drawn-to-scale diagram of our Minimalist Rings cutting into human skin. Epidermis, the outer layer of skin on humans is on average 1 mm deep and equal to 20% of our Minimalist Ring's blade length. Dermis, the next layer, is 2-3 mm deep and contains blood vessels and nerve endings. Our Minimalist Rings can fully penetrate the Dermis layer of skin with 60-80% of its blade length. Our Maximalist Rings have a larger blade weapon and can devastatingly cut through human skin, draw blood, and inflict damage.