Simple and Easy to Match -- Our extension chain is simple yet stylish, it can be perfectly integrated into various styles of necklaces, you can use it to match with all kinds of jewelry, which is both functional and beautifulAvailable in 4 Lengths -- There are 4 lengths for you to choose and use, which can help you easily adjust the length of the necklace to meet the needs of different occasions, and show your matching intelligence925 Sterling Silver -- Chain extenders are made of 925 sterling silver, comfortable to skin, ideal for most people to wear, while the structure is strong and thick, hard to break, durable for long time usage. Tip: Please avoid it from water to keep shinyEasy to Attach -- The chain extension is designed with a spring clasp, the clasp is flexible and sturdy, fluent to open and close, the another end features jump ring, both of ends are easy to attach to other jewelry easily, convenient for you to useWide Usage -- The heart charm extender is used for making new jewelry, repairing broken or old jewelry, etc, such as necklaces, bracelets, anklets, chokers, etc, the finished one also can be as a gift for your mom, wife and daughter on Mother's Day, anniversary, Christmas, etc