Designed to fit a 19 tooth transaxle like the Shafer (Spicer/Dana) or other similar Golf Car or NEV transaxles. This is a double stator, Axial Air Gap, Permanent Magnet Synchornous Motor with a Sine/Cosine rotor position sensor. Up to 120 amps continuous. Battery packs of 24 to 72 VDC, and maximum speeds of 5000 rpm. Weight of 36 pounds. Totally Enclosed case.