Ortho-Cast M buccal tubes, single, non-covertible #16/26, -14° torque, +10° off, MBT, 10pcsOrtho Cast M Series Buccal Tubes for Upper First Molars by Dentaurum, Germany These tubes are designed for the upper first molars and are used in orthodontic treatments according to the MBT system (with a maximum archwire size of 0. 022). A 14 torque allows for lingual root positioning, helping maintain proper anchorage and occlusal relationships. The +10 distal offset means the entry slot is angled to tip the crown distally, aiding in proper tooth