This Wartenberg wheel creates a real adrenaline spike with its prongs, hard shine and weighty feel. Designed to roll over any body part effortlessly, 22 prickly spikes dapple your partnerft.s skin, awakening nerve endings and leaving them extra receptive to further play. Made from nickel-free metal for hypoallergenic play. Pinwheel weighs 59 grams and is 7.3 in. long.