SafeMatrix Matrix Bands, Contour Narrow 4.5mm, Yellow, 50/Pk. Pre-assembled, easy-to-use, single-use bands create a smooth external surface against which restorative material can be packed. Push-button diverter creates band angulation to ensure tight interproximal contact. Narrow neck and rounded edges provide easy access and visibility. Can be used with all restorative materials as well as with wedges and rubber dam. Package of 50