RAM Vibrating Cock Ring Purple from Nasstoys of New York. Features: amazing vibrations. 10 functions. Waterproof vibrations. Phthalates free, RoHS compliant materials ring Silicone, bullet vibrator ABS plastic. Size bullet length 2.25 inches, width .75 inch, sleeve length 2.25 inches, width 1.25 inches, height 1.5 inches. Inner diameter small ring 1.08 inches, inner diameter large ring 1.34 inches. Bullet vibrator requires 3 AG13 batteries, included.