Ideal for all Class II composite restorations, pre-contoured Flexi-Trix Sectional Matrix Bands make it easy to achieve anatomically correct contact points. Unique wing-shaped design provides a handle for easier placement and removal. Flexi-Trix can be placed "wings up" for normal restorations or with wings upside down to bridge deeper restorations better. Ideal for use with Flexi-Clamp Matrix Rings (sold separately). Soft, 45 micron thin stainless construction. 50 per pack in S (5mm), M (6mm) or L (7mm) depths.