The Palodent V3 Sectional Matrix Systems retaining rings are nickel-titanium rings with glass fiber reinforced tines, to be used with sectional matrices for placement of Class II restorations in the posterior region. The retaining rings are available in Narrow (dark blue) for most premolar and small molars, and Universal (light blue) for larger molars. Placed with Palodent placement forceps. The advantages of the sectional matrices and rings include natural contours for better control of contact areas and embrasures, ease of placement, better visualization of the operative field, and more comfort for the practitioner and patient. Package contains 2 Narrow retaining rings.