Sectional matrix system for performing Class II restorations without stress (adjusted and predictable contact point, tight gingival seal, reduced finishing time, and easy-to-use system). With a non-stick coating (PTFE), it features a thin, non-tacky layer that allows for easy removal of the matrix. Matrices are color-coded for quick identification. 3.5 mm: Pediatric dentistry and small preparations in premolars, 4.5 mm: Medium preparations in premolars, 5.5 mm: The most commonly used size for Class II in molars, 6.5 mm / 7.5 mm: For large and deep preparations, cusp replacement in molars.