Cocktie Purple Vibrating Ring. Exclusively Nasstoys! The 1st One, the only one vibrating stretchy cock ring with nubs for maximum stimulation. Easy to operate push button controls. Waterproof vibrating cock ring is made using phthalate free, non-toxic materials. RoHS compliant. Materials used Vibe ABS plastic, String Thermoplastic Rubber TPR. Battery operated sex toy requires 2 LR41 batteries, included. Bullet vibrator measures 1.75 inches long 0.75 inch wide. String measures 6 inches long. Cocktie Purple Vibrating Ring Nasstoys of New York. New image added for 2013.