I used to just hear and see the picture

Anyone know what this thing? this is a chain of pigs, this thing is believed that our body can withstand sharp weapons, we can be immune if we use the object. I myself only heard from people and did not dare to try. And the price is also very expensive, I want to selfi or hold or come looking for buyers. But that intention I undo because in the law of life we ​​prohibit connect with pigs. But if just to give information where it is now, of course I will tell you.