Ensures tight, predictable Class II contacts. No need for Tofflemires, forceps, or retainer rings. Matrix bands held from the buccal and lingual by an intergrated spring clip handle, creating a natural curve. All-in-one sectional band is easy to place and remove by hand. Includes: -38 molar MO/DO bands -10 molar MOD bands -1 spring clamp Molar bands are 1/4" wide and 0.0015" thin.