One-piece / Monoblock Bonding Molar Tubes. 4pcs per set (UL + UR + LL + LR). 1st Molar Monoblock MBT 0.022. 2nd Molar Monoblock MBT 0.022. 1st Molar Monoblock MBT 0.018. 2nd Molar Monoblock MBT 0.018. 1st Molar Monoblock Roth 0.022. 2nd Molar Monoblock Roth 0.022. 1st Molar Monoblock Roth 0.018. 2nd Molar Monoblock Roth 0.018. Totally 50 sets per box. 1 box (50 sets buccal tubes per box : UL + UR + LL + LR). FDA Statement: The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies.