The torque range consists of seventeen series. These series are divided into:
- QTR series 65-78 || Build heights of 17, 25, 34, 60mm
- QTR series with 105-133-160 || Build heights of 17, 25, 34, 60mm
- QTL series 210-230-290-310-385-485 || Build heights of 65, 85, 105
- QMT LA 230-310-385 and 485 || Build heights of 70, 90, 110, 140
- QMT HA 385-485 with high rotor || Build heights of 90, 110, 130, 160

