Maxx Gear Vibrating Grande Penis Extender Black Extension with Clitoral Stimulating Spikes features powerful vibrations. Adds girth and length. Waterproof vibrations. Body safe phthalates free, RoHS compliant materials. Sleeve extension Thermoplastic Rubber TPR, Bullet vibrator ABS plastic with polyurethane PU coating. Size: sleeve extension total length 8 inches, insertable length 5 inches, shaft diameter 1.625 inches. Bullet vibrator requires 1 1.5V N battery, included.