Wartenberg wheel is a medical device commonly used to test nerve sensitivity and measure pain threshold. Also known as a pinwheel or a neuro wheel, Wartenberg wheel is characterized by a set of spokes attached to a small rotating wheel. The tool is rolled over the skin to stimulate nerve endings, creating a range of sensation responses. In the BDSM community, the device is often used as a form of sensation play, as the prickling sensation produced can be quite intense. Synonyms for Wartenberg wheel include medical pinwheel, neurological wheel, sensory testing tool, and nerve wheel.