Check both the tube label and the end hardware.
- TorqueMaster Original is also called TorqueMaster One and may show “TM” on the label.
- TorqueMaster Plus commonly appears as TM3 or TMP on the tube.
- If your label mentions TMII, TMP, or TM3, compare your end hardware to Plus reference images. Buy springs that match the actual hardware you have, or plan a conversion to Plus with a full kit if your winding gear set has been discontinued.
Upgrading from TorqueMaster to TorqueMaster Plus requires a complete conversion kit with springs, winding assembly, and cable drums.