Similar to the Azabache charms these red string bracelets are meant to be worn for your protection.
 
Uses: Wear these bracelets to reverse the evil eye, jealousy and envy.
 
They come in three styles:
Evil eye bracelet (evil eye charm)
Azabache bracelet (black amber stone)
Faith bracelet (plain red)
Eshu bracelet (ellegua red and black)
Azabache fist bracelet (red with black fist)