AZDENT 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).