Buccal Tube 2nd Molar Bondable Monoblock Non-convertible MBT 0.022 50Sets/Box. Inblock cast orthodontic buccal tube, For 2nd Molar, Model: MBT 0.022, Single Tube, Bondable, Non-convertible, Package: 50 sets per box, in total 1 box (UR*50, UL*50, LL*50 & LR*50,200pcs).