Description:
Similar in appearance to a pizza cutter, this wheel of prickly little pins can be rolled over a person's skin, generating a unique, tingly sensation which many people really respond to. The pins are pointy enough to feel quite stimulating wherever they go but are not sharp enough to puncture the skin unless excessive pressure is used. For a heightened experience, we recommend using it in combination with a blindfold.
http://www.stockroom.com/Wartenberg-Pinwheel-P1569.aspx?ref=6211516