If someone puts your balls in here, you're screwed! [Just kidding]
But this item can be pretty devastating to testicles. Just look at the illustration, you can see all the extremely frightened spermies trying to escape a crushing.
It works by a simple handle turn, bearing down closer and tighter against your straining balls. Could make for a very sexy game with someone you trust!
While I wouldn't recommend having your balls crushed in this device all day, you can nonetheless wear it all day if you're feeling adventurous or possibly if you're worried you might have children one day, this will take care of that.
This also acts slightly as a ball stretcher as it weighs 800g of pure stainless steel.
Material: Stainless steel
Measurements: Length 110mm, Diameter: 72mm