Mr. Steel Wartenberg Pin Wheels are precision-crafted tools for sensory exploration and stimulation. Made from high-quality stainless steel, these wheels feature sharp yet safe pins that glide gently over the skin, creating a tingling sensation. Whether for medical role-playing, nerve stimulation, or sensory play, they offer controlled intensity with every turn. Available in various configurations, from single to multiple wheels, they allow for individual adjustment of pressure and sensation. These ergonomically shaped needle wheels fit comfortably in the hand and are perfect for anyone looking to add an exciting element to their collection of sensory toys. Clean before and after each use.