*This Item can not be returned or exchanged* - Used for extremely wide preps, missing cusps. - The world’s first Wide Preparation separator ring (green) makes Composi-Tight® 3D Fusion™ the most versatile and user-friendly sectional matrix system available. - The Wide Prep ring greatly simplifies what until now has been one of the most challenging posterior composite restorations. - Now you can restore these big preps with confidence knowing that you will achieve excellent contact and contour without having to take extra steps. **For further product information, please contact chat support**