Intense Cock Ring and Bullet Vibrator Black from Nasstoys of New York. 10 function bullet vibrator. The vibrating cock ring is a couples-friendly kit. This is a discreetly quiet and waterproof vibrating cock ring that is phthalates free and made of RoHS compliant materials. The length of the bullet is 3.5 inches and the cock ring measures 2.125 inches. 1 AAA battery required.