The UZI-HC-H-S Silver Hinged Double-Lock Handcuffs feature silver, nickel-plated high Tensile stainless steel with a double-locking mechanism and (20) locking positions. (2) keys included. Comes in silver. UZI combines advanced technical concepts with innovative designs to produce products used and trusted by the Army, Secret Service and Special Forces. Since its launch in the 1950s, UZI has become one of the world’s most famous firearm brands and a 20th century icon.