The Spy Bolt is an updated and improved version of the old Soviet KGB “dead drop” hollow bolt used during the Cold War. It features an O-ring seal for weather-proof storage of small valuables, communications, etc. It has reverse threading on the bolt head for additional security. This new version utilizes a 3/4″ diameter bolt providing a larger storage area than the original. Its secret storage compartment has a diameter of .49″ and a maximum depth of 2.7″. Overall length is 3.43″

Product Features

  • Made from a real ¾” machine bolt
  • O-ring seal for weather-proof storage of small valuables
  • Reverse threading on the bolt head for additional security

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