Description: Steel A: Diameter: 35mm Ring inner Diameter option: 40mm/1.57inches,45mm/1.75inches,50mm/1.97inches, Length: 11.6cm/ 4.56" *Material: Steel Packing Listing：as your choice, one cage with one ring Alloy B Color: Silver. Men's metal gravity ring. The device has 3 different sizes of rings for your men. Easy to install, compact and easy to carry. It will bring you lots of fun and perfect gifts for you or your loved ones The ring is available in the following Sizes (inside diameter): 40mm .45mm .50mm . All the package will be shipped secretly.