Features: - Longer lasting by design: Advanced materials and design combine to produce our longest lasting, most predictable separator ring ever. - Strong tooth separation yet easier to open: Nitinol drawn-wire nickel titanium is aligned at the molecular level for superior performance yet requires less effort to open. Garrison's proprietary StrataSet treatment maximizes longevity of this advanced material. - More uses: The Peek ultra-durable reinforcement on the back of the ring allows Strata-G to retain a higher percentage of initial strength for much longer than non-reinforced rings. Proprietary StrataBond silicone/PEEK tips withstand hundreds of applications. - Improved anatomy--unbeatable grip: Enhanced marginal ridge guides and supports matrix bands. StrataBond silicone for unsurpassed flash control. Ultra-Halt retention extensions provide tenacious grip and are gentler to the papilla. - Wider indications--wider smiles: Dentistry's premier Wide Preparation separator ring (green) makes Strata-G the most versatile and user-friendly system available. Tackle the most challenging posterior restorations with confidence knowing that you will achieve excellent contact and contour. Dimensions: - Height: 11.24 mm (at tallest point). - Length: 23.06 mm. - Width: 22.43 mm (at widest point). Material: - Nitinol. - Peek. - Silicone.