H2H (Heart 2 Heart) is an extensive line of adult pleasure toys designed for the fastest growing segment of adult product buyers in the world today, everyday women and the men who love them! Two very important components make up the brand that is H2H. The finest quality, skin safe products on the market today and beautiful packaging that is playful and suggestive but not objectionable in any way. The first goal of the H2H brand is product quality and safety. <br /><br />Heart-2-Heart Nipple Clamps Alligator Ends with Bullet Vibrators Chrome take a close look and you are sure to see the difference. Titillation with a touch of glamour! Vibrating clamps are basically Alligator style clamps with powerful vibrating bullets attached. The vibration travels through the metal to the nipple increasing the pleasure/pain sensation. Alligator clamps work very much like spring tension close pins. The tabs on the open end are pushed together causing the closed end to open and to be then attached or pinched onto the desired object. Alligator clamps differ from close pins in that they have a pressure screw which when turned in lessens the amount of pressure on the object being pinched. <br /><br />The 3 speed clamps (low constant vibration, medium constant vibration and high constant vibration) are powered by 3 LR44 batteries which are included. Replacement batteries are readily available anywhere watch or hearing aid batteries are sold. All of our nipple clamps are made of nickel plated steel and are animal product free. They feature protective plastic covers which are skin safe and help to keep the metal from digging into the nipple.