- Essentials Endo Foam Sponge Inserts are high-quality disposable polyurethane sponges that come in a convenient triangle shape. - Fits Standard Endo Rings. - These triangle dental sponges are designed to be compatible with a wide range of endo ring brands. - They easily slide into most triangle inserts without any problem. - Use these foam inserts to hold, arrange, and even clean small instruments before an endodontic or implant procedure. - It can hold screws, files, and pluggers securely. ** For further product information, please contact Chat Support**