By using a combination of two of these single solid metal electro-penis rings (sold separately) you can enjoy electro-sex tingling and orgasmic contractions along the entire length of your penis, or wear a single ring with a different unipolar electrode to vary your play. You can even share a circuit with your partner to feel rhythmic sensations wherever you touch. However you wear these individual penis rings, you can expect strong contractions and intense tingling that can bring some men to climax without any further stimulation. For optimal sensations, use with conductive gel. Please note that you will need an electrical stimulator to power this item. Specifications: Diameter (multiple sizes available): 32 mm (approximately 1.25 inches in diameter) 34 mm (approximately 1.3 inches in diameter) Connection: 2mm Weight: 23-26g Materials: Made from a solid bar of aluminum T6082T6 Number of poles: 1 (unipolar) What's included? 1x ElectraRing electric penis ring made of solid metal 1x microfiber storage bag 1x User manual (EN/FR/DE/NL/ES/IT)