An easily concealable universal handcuff keyDISCLAIMER I do not condone using this thing for illegal purposes. It is to be used only for a greater understanding of security and for self-defense (like if you are kidnapped or something)They have SUDO printed on the top You: Please let me go Kidnapper: No You: SUDO please let me go Kidnapper: OK PS For some reason the SUDO does not print on my machine, perhaps as the letters are too small to show up. INSTRUCTIONS: Some clean up work may be required due to the small size of the object. I used a really thin screwdriver to unclog the hole in the middle of the key.