Universal Fit: The set contains 8 ring adjusters in 8 different sizes. The ring insert is inserted into the ring to reduce the size so the ring sits securely on your finger and you don't risk losing it. You can reduce the ring size from 0.5 to 1 mm. Fits ring widths from 1 to 10 mm. Suitable for both men's and women's rings, even large knuckles. Smart Design: The ring adjuster inserts into the ring, and the loop holds the adjuster securely in place. Invisible and Transparent: The transparent material means the insert is invisible and the beauty of the ring is not affected. Durable and Comfortable: Made of soft, durable, sturdy silicone with good elasticity. Protects the ring and finger: Additionally, the ring insert can help resolve joint problems and prevent pinching of the skin, preventing the ring from slipping off, for example, in soap and dishwater. Specifications: Color: Transparent Size: 10.0 cm x 8.0 cm x 1.0 cm Material: Plastic/Resin Package includes: Ring adjuster, set of 8 in different sizes Note: Ring not included!