Check the listing for details. Dental Sectional Matrix Contoured Matrice Fits Triodent Clip Ring Matrices 32Pc. Condition: New. Listed at 6.97 USD. 1 box =(30pcs Dental Matrix Bands+2 Resin rings） #1 x5pcs #2 x10pcs #3 x10pcs #4 x5pcsName：Dental Sectional Matrix Triodent Style Material: Metal MatrixFeatures: 1.Designed with hole protrusions, convenient to clamp, place and take out the formed piece 2.Form the adduction of the adjacent edge ridge 3.Conforms to the subgingival extension of the Tooth neck 4.Larger curvature can wrap and fit the tooth more stably 5.Restore tooth shape and Anatomical shape 6. The resin material has good elasticity and resilience, does not deform (note that the elastic limit cannot be exceeded). 7.Special reinforced matirial ensures the appropriate strength and elasticity; 8.Two rings: one is used for normal crowns, and the other is used for crowns with low crowns, deciduous crowns or irregularly arranged crowns. 9.Good elasticity and toughness, good clamping force, invariability after repeated use. 10.Close fit and good retention 11.Autoclavable