In the interest of not spreading misinformation, I did edit the webpage to fake this (you can’t order the handcuffs online, only government / military / law enforcement can purchase them, and this specific item is discontinued.)
VIBCO’s lines of heavy duty vibrators will solve any vibration problem such as: speed the flow of bulk
materials through the smallest bin, hopper, and chute, to the largest silo; pack materials in drums and bags; consolidate concrete in pipe, precast and prestressed industries; for screens and screeds and a variety of other industrial applications.
here’s what the vibrators are used for :