Do you want to hide SD memory cards and cash in a protective secret container? The Spy Bolt is an improved version of old Soviet KGB “dead drop” hollow bolt used during the Cold War. It has O ring seal that provide weather proof storage.
You can securely store small valuable items like cash bills, memory cards and more in this hollow metal bolt. It is ideal for spy work and with tough exterior provide additional security to your valuable items. $24.99
Very cool, love all things industrial.