Product Number: AE385 The Lil Devil from the Master Series collection is a mini Wartenberg wheel. With this compact toy you can prick your partner's skin, which makes the skin extra sensative for added stimulation. This extra small pinwheel is perfect to take with you on your travels. It is made of plastic, so it is lightweight. Clean it after every use with water and toy cleaner, so you can safely use it again and again.