Set of 3 rings for the penis that includes a cable with banana connector. Each ring is unipolar, so you need to use 2 rings at the same time or exchange one for another unipolar electrode. Remember not to use this product if you have sensitive or damaged skin or if you have heart problems. Use contact gel for a superior experience. Features: SiliconeDiameter: Ring 1: 3,6 cm Ring 2: 4,2 cm Ring 3: 4,6 cm