ELETIUO Filled Metal Ring Guard Set for Loose Rings, 12 Pack 3 Sizes for Different Band Widths, Invisible Ring Adjuster Tightener Spacer Fitter, Golden+Silver Color

So easy to use and very effectively

Flimsy, terrible instructions and bad quality. Did not work at all with my rings and the edges are sharp. If you’re considering using something like this, go to a jeweler and have a good stable metal sizer put in. This was just a waste of money

Nice for the oversized rings so you don't have to take it to a jeweler and have it sized down, losing precious metal in the process.

Good product to use

Works but is very thin and hard to keep its shape

Works for me.

Not easy to adjust to the size you need

Purchased a new ring and at the store it fit ok. Few days later it started to feel loose. The ring would Come off while washing my hand. Decided to buy this ring size fixer and took a set of pliers and installed it. It works great.