Foldable Zinc Alloy Knuckle Duster for Self Defense

Modeling:Foldable Knuckle Duster with Carving
Material: high strength zinc alloy
Size: inner diameter 2.3cm
Features: smooth opening and closing, strong and durable, beautiful and generous
Application: for car windows, escape, self-defense and other uses
Note: The four rings can be arranged in any combination, can be contracted into a plate finger to become a single ring, can also be two rings side by side to form a two-finger buckle, can also be all unfolded, to become a four-finger use of the usual is to play with the jewelry at the critical moment is a tool of self-defense!