MAXIMUM ROTATION RATE: Each style of electrode for this rotator has a separate maximum rotation rate. Never exceed maximum rotation rate when working with rotating electrodes.
All shafts and electrodes for this rotator are sold separately. Customers who own the older MSR rotator may continue to purchase select shafts and tips for their rotator.
The earliest model MSR style rotator (part number AFMSR) has a distinct long black motor assembly and only two brush contacts (one for the disk and one for the ring).
If you still own and use one of these older MSR rotators, you can still use it, even with the newer electrode series that have been developed more recently. The electrodes compatible with this original MSR rotator are as follows: E2M, E3, E4, E6, E7, MT28 and MDI19.