For CBT enthusiasts, sometimes slow and steady is the best way to fully appreciate the unique sensations of scrotum torment. This thumb-screw style ball squeeze gives you or your partner complete control over the pressure on your balls. Lock that sack in the vice and twist the screws to raise the hard, unyielding plate.
The spikes will be slowly adding discomfort during CBT play. The spikes can be shortened or lengthened or removed as you play for maximum versatility.