Beware Of Cheap Plastic Keys That Don't Have The Little Tab At The Top That Locks And Unlocks The Secondary Lock On Police Handcuffs.Composite Plastic, Universal Handcuff Key as a Concealable, Backup Handcuff Key - SummaryThis is the original patented universal handcuff key.  Used as a backup handcuff key, this non-metallic key is the size and shape of a quarter, disguising it so it does not appear to be a key.  Made from a specialty composite for lightweight durability and flexibility, this universal handcuff key can be hidden behind shirt or pant buttons, beneath watches, beneath mace cans and in and around footwear. Specifically designed for the US Special Forces and elite federal law enforcement units, this undetectable backup handcuff key can be removed from behind buttons, watches, etc. and used to unlock cuffs with one hand.  THIS UNIVERSAL BACKUP KEY OPENS ALL CUFFS.  Locations for hiding the key include:1. shirt buttons2. shirt pocket buttons3. shirt cuff buttons4. necklaces5. sunglasses strap6. inside and outside shoes, either inside the shoe beside the heel (inserted into cut foam) or inside a slice in the sole.7. behind watches with silicone (almost no one removes a detainee's watch)8. pant buttons and spare buttons9. hat brims10. pant cuffsThis is original, patented, concealable universal handcuff key.  This universal handcuff key really is your "key to surviving a hostage situation."