If you need to know more about Chastity Device and accessories, please check out this link.https://www.amazon.com/shops/ternence-chastity-deviceWhy 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 . We highly recommend that you measure yourself first. Cage: 0.86 Inch in length, 1.26 Inch in diameter. 4 size for choose based on inner diameter of the clamp ring. Ring Sizes: 1.57 Inch, 1.77 Inch, 1.97 Inch, 2.17 Inch (for your choice). Cleaning: Use a mild soap or body wash and clean it with a soft towel or brush (toothbrush). Due to the different production batches, the products may be slightly different. If you have any problem during using, please contact us . Thank you!