There are 4 Smart Drive magnetic rotor options, 2 options for each of the stator options (36 or 42 pole).
For 42 pole stators you need either the type 2 (0.75W/rpm) or the type 2+ (1.0W/rpm).
This listing is for the type 2+ (1.0W/rpm).
This listing is not suitable for 36 pole stators.
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