Derekz 3 Pinwheel. A favourite toy for fetish play as well for beginners as diehards. The medical name for this device is Wartenberg pinwheel. The sharp but gentle points give you the opportunity to tickle, tease or,….. as it roles across the skin of your partner. The pinwheel is a medical device made of stainless steel and can be sterilised in a autoclave. The more pins, the less pain.