This BDSM tool is known as the classic Wartenberg wheel, which is a single spiked wheel on an axle that spins as you roll it across the body. Used as a sensation tool, this toy will send yummy tingles up and down your spine.
While the spikes are blunted and not intended to pierce the skin, it's certainly possible to if you apply enough pressure. Be sure to check in with the receiver and communicate!
- Stainless steel