iMatrix Sectional Matrix System Intro Kit, Includes: 1 x black standard ring, 1 x grey narrow ring, 35 x yellow small wedges, 35 x blue medium wedges, 35 x orange large wedges, 35 x 3.5 mm matrices , 35 x 4.5 mm matrices, 35 x 5.5 mm matrices, 35 x 6.5 mm matrices. Introductory kit