If you need to know more about Chastity Device and accessories, please check out this link.https://www.amazon.com/shops/ternence-chastity-deviceBefore you purchase this Chastity Device base ring, please make sure your device is from TERNENCE, as there may be differences in quality and size between different brands of equipment. NOTE: This base ring compatible Chastity Device ASIN: B07DWR12NP B07DWRWR44 B07DWNZJK4Why choose TERNENCE products. The quality of the product comes from ultra-fine hand-grinding. A perfect surface finish is guaranteed. Very smooth, it will not damage your Skin.Features: Real stainless steel. No chrome plating and no nickel plating. Just hand-polished, More comfortable and hypoallergenic . Ergonomic Design, 3 size for choose based on inner diameter of the clamp ring. Ring Sizes: 1.57 Inch, 1.77 Inch, 1.97 Inch (for your choice).Note: Because our equipment is handmade, if you get the ring you can't install it. You can use pliers or needle-nosed pliers to adjust the angle of the two locating pins.Cleaning: Use a mild soap or body wash and clean it with a soft towel or brush (toothbrush).