The NAD Pinwheel, which is a pinwheel neurological testing device, provides a disposable solution in aiding professionals in the diagnosing of nerve damage. It is used by rolling the Wartenberg pinwheel over the problem area of the body. Its ergonomic handle design and compact size make it easy to handle and appropriately use while performing a wide variety of tests, such as pain perception responses or reactivity and sensitivity of skin or nerves. No sterilization is needed, there is no possibility of cross-contamination since the product is single-use, and it's made in the United States.