Kinklab Steel O'Rings - 3 PackThis collection from KinkLab features 3 nickel-plated steel cock rings for a perfect fit in any variation of ways youft.d like to wear them. Designed to create larger, harder erections.Product Details: Ring sizes: 2 (5cm), 1.75 (4.5cm), and 1.5 (3.8cm). Safe to use with any kind of lubricant. Not safe for nickel allergies.These products and their packaging are designed in the USA. The unique packaging displays these products clearly and honestly. In many cases, the packaging is also reusable and provides a functional and attractive place for you to store your toys for future use.