Most tooling is interchangeable between Mesa’s SureTorque ST-S3 and ST-120S. There are certain situations when they will not be interchangeable. For example, if you own an older ST-120S model that has the “standard” clamps, the mounting is different from the parallel clamp mounting.
Examples shown below:
Parallel/centering clamps: (pros: tool less / quick change-over, no settings to document)
For best results, we recommend that the parallel clamps are used with our automatic product detection bases: http://torque.mesalabs.com/2015/07/06/torque-automatic-product-detection/.
Standard Clamps: (cons: need Allen wrench to change over, right and left positions must be documented)